留言 (liú yán) means “to leave a message; to leave one's comments; message”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
请在留言板上写下你的建议。
Qǐng zài liúyánbǎn shàng xiě xià nǐ de jiànyì.
Please write your suggestions on the message board.
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