Learner's definition of MIDST
[noncount]
1
a : the middle area or part of something中部；中间 b : the period of time when something is happening or being done在…进行过程中；正值…发生时 -
We are in the midst of a terrible war.我们正处在可怕的战争中。
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They were in the midst of remodeling their house.他们正在改建他们的房子。
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The region is currently in the midst of a terrible drought.这一地区目前正遭遇严重干旱。
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We never gave up hope in the midst of our troubles.我们在困境中从未放弃过希望。
2
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used to say that someone is among the people in a group（某人）在某群体当中 -
We sensed a traitor in our midst. [=we sensed that one of the people in our group was a traitor]我们感觉到在我们当中有一个叛徒。
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He stood in their midst [=he stood among them], waiting for a reply.他站在他们中间，等待着回复。
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strangers in their midst他们当中的陌生人