保持镇静的英文释义如下：
stay calm;keep calm;calm;To stay calm;remained calm.
双语例句：
1、在紧急情况下，保持镇静至关重要。
It is vital to stay calm in an emergency.
2、他竭力保持镇静，思索着该怎么办。
Trying to stay calm,he wondered what to do.
3、情况紧急的时候，保持镇静是重要的。
It is important to keep calm in an emergency.
4、警方吁请公众保持镇静。
The police made an appeal to the public to remain calm.
5、我练就一副在压力之下保持镇静的本领。
I have schooled myself to remain calm under pressure.
6、尽管他竭力保持镇静，话音里仍明显带有怒气。
He did his best to remain calm,but there was a distinct edge to his voice.
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