Usages of bǎochí
请 保持 安静。qǐng bǎochí ānjìng.
Please keep quiet.
保持 这里 干净。bǎochí zhèlǐ gānjìng.
Keep this place clean.
请 保持 冷静。qǐng bǎochí lěngjìng.
Please remain calm.
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