动词短语
中文翻译：保持文明的舌头
同义词：
["保持礼貌，讲文明话例句：1. It's important to keep a civil tongue at all times.（在任何时候保持文明的舌头都很重要。）"]
例句：
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1. It's important to keep a civil tongue at all times.
在任何时候保持文明的舌头都很重要。
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2. She was criticized for speaking too loudly, and she decided to keep her voicedown.
她因说话声音太大而受到批评，决定保持低声。
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3. The teacher advised students to keep a civil tongue in class.
老师建议学生们在课堂上保持文明的言辞。