Cogwheel
n. 钝齿轮, 嵌齿轮
✅ 同义词
🗣️ 情景例句
It's my pleasure.
我很愿意效劳。
Who is he?
他是谁？
do in fact run out of energy in accordance with the second law of thermodynamics (whether the whole universe does so is a moot point at present).
也都会消耗完其能量（整个宇宙是否如此，目前尚有争论）。