Underpinn
v. 從下頭支持;支撐;援助
??? 情景例句
You can't expect to learn a foreign language in a week.
別指望一個星期就能學會一門外語。
If you want some shoes, look under the bed.
如果你要鞋子，就在床底下。
Don't keep the truth from me.
別瞞著我事實真相。