Triethide
三乙基金屬
??? 情景例句
And I do feel bad about your mother
而且我覺得很過意不去讓你母親
The first step is as good as half over.
第一步的成功等于事情的一半已完成。
We shall need two buses to meet people at the staton.
我們需要兩輛公共汽車到車站去接人。