Knudsen effect
[化] 克努森效应
🧩 词语组成解析
n. 努森（M·H·C, 1871-1949, 丹麦物理学家）
🗣️ 情景例句
The work is not as difficult as you think.
工作不像你想象的那么难。
To fall down
掉下
I can lend you one and a few pieces of equipment.
我可以借给你一顶帐篷和几样装备。