HSK 6
通风
tōngfēng动
airy; ventilation; to ventilate; to disclose information
开会前请先打开窗户通风。
Kāi huì qián qǐng xiān dǎ kāi chuāng hu tōng fēng.
Please open the windows to ventilate the room before the meeting.
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Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 6.