惯例

HSK 7-9

guànlì

custom; habitual practice; established usage

usual practice

每天早上刷牙。

Měitiān zǎoshang shūyá.

Brush teeth every morning.

会议开始前通常要敲门。

Huìyì kāishǐ qián chángtōng yào qiǎomén.

Knock before entering the meeting.