Underpinn
v. 从下头支持;支撑;援助
🗣️ 情景例句
my friends,
我的朋友们。
I asked him to go to the store, but he wouldn't
我请他去商店，但是他不肯。
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。