Metacentre
n. 定傾中心
??? 情景例句
My mother doesn't mind who comes to stay, she's very easy-going.
我母親不在乎有什么人來往，她十分隨和。
I'm not sure what time I'm coming back.
我不肯定我什么時間回來。
Excuse me. Is there a bookshop near here?
請問，附近有書店嗎？