valve

valve — 名詞

1. A movable component in a pipe, machine, or body organ that allows or stops the m

1.名詞B1
釋義

閥門

控制液體或氣體流量的開關裝置

A movable component in a pipe, machine, or body organ that allows or stops the movement of liquid or gas, often ensuring it travels in only one direction.

例句

Aylin turned the valve on the water pipe to stop the leak in the kitchen.

Aylin 轉動水管上的閥門，止住了廚房裡的漏水。

collocation: turn a valve

After the surgery, a new valve helped Joon's heart pump blood normally.

手術之後，新的瓣膜幫助 Joon 的心臟正常地輸送血液。

biological context: heart valve in human body

同義詞
  • tap

    British English term for a water valve with a spout; does not apply to heart valves or gas valves

  • faucet

    American English term for a water valve with a spout; limited to household water fixtures

  • stopcock

    Technical term for a valve that regulates flow through a pipe, common in laboratory settings

用法筆記

Can refer to both mechanical devices in pipes and natural structures in the heart and veins. For heart valves, the specific term in Chinese is 瓣膜 (bànmó).

常見錯誤

❌Please turn off the valve of the window.
✅Please turn the valve on the pipe to shut off the water.
💡Valves control the flow of liquids or gases, not openings like doors or windows.

2. A button or lever on brass instruments such as trumpets and horns that the playe

2.名詞B1
釋義

活塞

銅管樂器上改變音高的按鍵

A button or lever on brass instruments such as trumpets and horns that the player presses to send air through different passages, producing higher or lower notes.

例句

Élise pressed the valves on her trumpet to play the higher notes correctly.

Élise 按下小號上的活塞，正確地吹出高音。

collocation: press a valve (on brass instruments)

On a French horn, the player's left hand operates the three main valves.

演奏法國號時，樂手用左手操作三個主要活塞。

同義詞
  • piston

    Refers specifically to the sliding inner cylinder of a valve mechanism on brass instruments; more technical than 'valve'

用法筆記

Found on brass instruments like the trumpet, cornet, French horn, and tuba. Woodwind instruments use 'keys' instead of valves, although the function is similar.

常見錯誤

❌He pressed the valve on his guitar.
✅He pressed the valve on his trumpet to change the note.
💡Valves are a feature of brass instruments, not string instruments like the guitar.