He took a deep breath, desperately trying to keep calm.

他深深地吸了口气，竭尽全力保持镇定。

《牛津词典》

Wasn't the management merely trying to keep people calm?

是不是经理只是想让人们镇静下来。

youdao

"Engine failure." Will said, trying to keep his voice calm.

“发动机熄火。”威尔尽量使自己的声音保持平静。

youdao

Trying to keep calm, she joined the multitude pressing for news outside the hospital.

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"I always say 'No, I hope not, I'm trying to keep them calm', " he said.

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They were trying to calm me, they keep telling me I was safe, they were protecting me.

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