Fick principle
[医] 菲克氏原理
🧩 词语组成解析
n. 菲克（德国生理学家）
🗣️ 情景例句
I've been having a hard time keeping my eyes open
我一直挣扎着要让双眼睁开
Button holes are very hard to sew.
要缝钮扣洞非常难。
I want to go shopping. Can you come with me, please? You can help me carry the things.
我想去商店买东西，你能和我一起去吗？你可以帮我拿点东西。