Permsele lective membrane
[机] 通透选择膜
🧩 词语组成解析
membrane
['membrein]
n. （动物或植物体内的）薄膜;隔膜;（可起防水、防风等作用的）膜状物;
🗣️ 情景例句
She is making steady progress in her learning.
她在学习中不断进步。
The contract contains basically all we have agreed upon during our negotiations.
合同将我们达成协议的内容基本上都写上了。
Why, you may wonder, should spiders be our friends?
你可能会觉得奇怪， 蜘蛛怎么会是我们的朋友呢？