chill [tʃɪl]

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vt.使变冷，使冷却，使沮丧；n.寒冷，风寒

to ( cause to) become cold but not freeze

With the chill factor, it's nearly minus forty here. 加上风寒指数，气温接近零下40度。
The bad news cast a chill over the whole family. 这坏消息使全家人感到沮丧。