thermal

thermal — 形容詞

1. involving or produced by heat energy — for example, thermal power stations that

1.形容詞B2
釋義

熱能的；熱的

與熱能或溫度有關的

involving or produced by heat energy — for example, thermal power stations that burn fuel to generate electricity, or thermal insulation that stops heat from escaping a building.

例句

The thermal power station near Hiro's town burns coal to make electricity for local homes.

Hiro 家附近的火力發電廠燒煤來為當地家庭供電。

thermal + noun: power station / insulation / energy

Noor wrapped the pipes in thermal material to stop them from freezing during winter.

Noor 用隔熱材料包裹水管，防止它們在冬天結冰。

同義詞
  • heat-related

    less technical, used in general contexts

  • heat

    used as a noun modifier ('heat energy'), not equivalent as an adjective

反義詞
  • cold

    describes the absence of heat rather than a direct opposite of the adjective thermal

文法句型

thermal + noun

用法筆記

Often appears before a noun as a technical or semi-technical term — common compounds include thermal energy, thermal insulation, thermal conductivity, and thermal imaging. In everyday language, thermal most often describes clothing or building materials rather than abstract heat concepts.

常見錯誤

❌This jacket is very thermal.
✅This is a thermal jacket.
💡thermal is used before a noun in this sense, not as a standalone adjective after a linking verb.
❌The water in the cup is thermal.
✅The water in the cup is hot.
💡thermal describes heat-related properties or materials, not the temperature of an object in everyday speech.

2. made from a special material that traps body warmth, helping you stay warm in co

2.形容詞B1
釋義

保暖的

用特殊布料防止體熱散失的衣物

made from a special material that traps body warmth, helping you stay warm in cold weather — commonly used for clothing, blankets, curtains, and bedding.

例句

Vivek bought a thermal jacket for his hiking trip in the mountains last month.

Vivek 上個月買了一件保暖夾克，準備去山上健行。

thermal + jacket / socks / underwear

Sade wears thermal socks every morning when she walks her dog in the snow.

Sade 每天早上在雪地裡遛狗時都穿著保暖襪。

同義詞
  • insulated

    broader — can describe buildings, containers, and clothing

  • warm

    more general — does not specify the insulating material

反義詞
  • lightweight

    describes thin clothing without insulation

  • breathable

    describes fabric that lets air through, opposite of trapping heat

文法句型

thermal + article of clothing

用法筆記

Only applies to items specifically designed with insulating material to retain body heat. An ordinary warm woollen jumper is 'warm' but not 'thermal' unless it has a special insulating lining. Thermal clothing is often worn as a base layer beneath other garments.

常見錯誤

❌I need a warm thermal coat for the party.
✅I need a warm coat for the party.
💡thermal already implies warmth; using both is redundant.

3. relating to water that has been naturally warmed underground by the earth's inte

3.形容詞C1
釋義

地熱溫泉

與地下天然溫泉或熱水有關的

relating to water that has been naturally warmed underground by the earth's internal heat — used to describe hot springs, pools, spa treatments, or resorts that use geothermally heated water.

例句

The hotel in Japan has a thermal pool fed by hot springs from deep underground.

日本那家飯店有一個由地下溫泉注水的溫水池。

thermal + pool / bath / spring / spa

Christopher went to a thermal spa in Iceland with water from volcanic rock deep underground.

Christopher 去了一家冰島地熱SPA，那兒的水來自深層火山岩。

同義詞
  • geothermal

    more technical — refers specifically to heat from the earth's interior

  • hot-spring

    colloquial compound, used as an adjective ('hot-spring bath')

反義詞
  • cold

    describes water at normal ground temperature

文法句型

thermal + water/bath/spring/spa

用法筆記

Almost always appears before a noun describing a water feature or facility. The thermal spring (geological formation) and the thermal bath (man-made pool) are the most common collocations. Distinguish from sense 1 (HEAT-RELATED) — sense 3 is specifically about geothermally heated water, not heat in general.

常見錯誤

❌This cup of tea is thermal.
✅This cup of tea is hot.
💡thermal (sense 3) applies only to geothermally heated water, not to any hot liquid.
❌The thermal water in my kettle is boiling.
✅The water in my kettle is boiling.
💡tap water boiled at home is not 'thermal water.'

4. relating to how a physical material behaves or changes depending on its temperat

4.形容詞C1
釋義

熱力；熱學

描述物質隨溫度變化的物理性質

relating to how a physical material behaves or changes depending on its temperature — used in science to describe properties such as thermal expansion, thermal motion, thermal equilibrium, and thermal conductivity.

例句

In science class, Maeve measured a metal rod's thermal expansion as it got hot.

在自然課上，Maeve 測量了金屬棒受熱後的熱膨脹。

thermal + noun: expansion / energy / motion / equilibrium

An ice cube on the table absorbed thermal energy from the air and melted into a puddle.

放在桌上的冰塊吸收了空氣中的熱能，融化成一灘水窪。

thermal energy — heat transfer in a concrete scene

同義詞
  • thermodynamic

    more specific — describes heat-to-work conversion and system behaviour

  • caloric

    historical term for heat-related, now rare in modern physics

文法句型

thermal + noun (property/behaviour)

用法筆記

A technical sense used primarily in physics and materials science. Each compound (thermal expansion, thermal equilibrium, thermal motion) is a distinct scientific term with a precise definition. Not used in everyday conversation. Distinguish from sense 1 (HEAT-RELATED) — sense 4 describes properties and behaviours governed by temperature, not simply things connected with heat.

常見錯誤

❌The room reached thermal equilibrium because I turned on the heater.
✅The room warmed up after I turned on the heater.
💡thermal equilibrium is a physics concept involving two objects at the same temperature after heat exchange, not simply a room getting warmer.

thermal — 名詞