Underpinn
v. 从下头支持;支撑;援助
🗣️ 情景例句
I've got to go. Tomorrow is Monday,
我得走了。明天是星期一。
Mac always has to run to catch his train.
麦克常常为了赶乘火车而奔跑。
I can't read it!
我看不懂这封信，