夏天白天长，冬天白天短。

Days are long in summer and ___short in winter.

他在这么短的时间内长大了这么多。

He's grown so much in such a ___short time.

如果我每小时左右休息一小会儿，我工作得更好。

I work much better if I take a ___short break every hour or so.