Gearcase
n. 齒輪箱, 變速箱殼體, (自行車)齒輪罩
??? 情景例句
more than reading, writing, and arithmetic.
比閱讀 、寫作及算術更多的東西。
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
Yes, I'm fine. Please don' worry!
我沒事的，別擔心。