Tap on轻轻敲击
2023-01-04 16:48:59 每日学英语
tap on：轻轻敲击(某表面)，轻击…(某部位) beat surface of sth，hit sb/sth lightly on (a part)。
on tap：随时供应的,现成的。这里tap是名词，ready for use when needed。
【例句】
Someone is tapping on the door.
有人在敲门。
The teacher tapped her fingers on the desk impatiently.
老师不耐烦地用手指敲桌子。