membrane

membrane — 名詞

1. a thin, soft layer of tissue inside the body of a living thing that covers, line

1.名詞B2
釋義

生物膜

覆蓋或連接生物體內器官的薄層組織

a thin, soft layer of tissue inside the body of a living thing that covers, lines, or connects internal organs and other structures.

例句

The mucous membrane inside your nose helps trap dust and germs before they reach the lungs.

鼻腔內的黏膜有助於在灰塵和細菌到達肺部前將它們攔住。

mucous membrane — common compound noun for body linings

During surgery, the doctor carefully cut through a thin membrane to reach the damaged organ.

手術過程中,醫生小心地切開一層薄膜,才能觸及受損的器官。

同義詞
  • tissue

    a broader term; tissue refers to any group of similar cells, not specifically a thin covering layer

  • lining

    refers specifically to the inner covering of an organ or cavity, narrower than membrane

  • layer

    a more general word; does not imply biological origin or thinness

文法句型

membrane + of + body part

adjective + membrane (mucous membrane, thin membrane)

用法筆記

Frequently modified by the name of the organ or body part it surrounds (e.g., mucous membrane, membrane of the brain). In medical contexts, many membranes have their own specialized names — pleura for the lung lining, peritoneum for the abdominal cavity, and meninges for the brain covering.

常見錯誤

The membrane protects the body from the sun.
The skin protects the body from the sun.
💡Membrane refers to internal layers of tissue, not the outer skin.

2. a thin, flexible sheet of synthetic or natural material that separates two areas

2.名詞B2
釋義

薄膜

用來分隔、阻隔或過濾的薄片材料

a thin, flexible sheet of synthetic or natural material that separates two areas, blocks the passage of liquids or gases, or serves as a cover for an opening.

例句

A waterproof membrane was installed beneath the roof tiles to keep rain from leaking in.

屋頂瓦片下方安裝了一層防水薄膜,防止雨水滲入。

waterproof membrane — common collocation in construction

These running shoes use a breathable membrane that lets sweat escape while keeping water out.

這款跑鞋採用透氣薄膜,能讓汗水散發出去,同時保持鞋內乾爽。

breathable membrane — product feature collocation

同義詞
  • film

    suggests a very thin layer, often transparent; common for packaging and coatings

  • sheet

    more general; does not imply flexibility or the function of blocking passage

  • barrier

    focuses on the function of blocking rather than the material itself

文法句型

adjective + membrane (waterproof membrane, synthetic membrane)

membrane + for + purpose

用法筆記

Often appears in technical contexts such as construction, engineering, and filtration. Common modifiers include waterproof, breathable, synthetic, and permeable. Unlike sense 1, this sense does not refer to living tissue.

常見錯誤

She covered the table with a colourful membrane for the party.
She covered the table with a colourful tablecloth for the party.
💡Membrane is used for functional or technical coverings, not decorative ones.

3. the fine outer covering that surrounds every living cell, controlling which subs

3.名詞C1
釋義

細胞膜

包圍所有活細胞的外層薄膜

the fine outer covering that surrounds every living cell, controlling which substances are allowed to enter or leave.

例句

The cell membrane controls which nutrients enter the cell and which waste products leave.

細胞膜控制哪些養分進入細胞,以及哪些廢物排出細胞。

cell membrane + control/allow/repair — typical verb patterns

Damage to the cell membrane can cause the cell to die because it can no longer hold its contents.

細胞膜受損可能導致細胞死亡,因為它無法再維持其內部物質。

同義詞
  • plasma membrane

    a more technical synonym used in advanced biology; identical in meaning

  • outer membrane

    sometimes used for the outermost layer of a cell, especially in bacteria

反義詞
  • cell wall

    a rigid outer layer found in plant cells, fungi, and bacteria — structurally different and not present in animal cells

文法句型

cell membrane

membrane + of + cell

用法筆記

Used almost exclusively in biology and life-science contexts. The compound noun cell membrane is a fixed term; advanced learners may also encounter the synonym plasma membrane. Distinguish from cell wall, which is a rigid outer layer found only in plants, fungi, and some bacteria.

常見錯誤

The cell wall allows water to pass in and out of an animal cell.
The cell membrane allows water to pass in and out of an animal cell.
💡Only plant cells have a cell wall; animal cells are surrounded by a cell membrane.