緊張起來的用法和樣例：
例句
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她一看見警察就緊張起來，結果把車開到馬路邊上了。
She got rattled when she saw the policeman and drove the car up over the curb. -
建了一座新鋼廠，於是就業機會相當充足了；然而，不出所料，住房卻緊張起來。
A new steel works has just been set up. So there's not much lack of work. There is however, surprise, surprise-an acute lack of housing. -
形勢逐步緊張起來。
The tension is building up.
