One in five young adults was struggling with everyday mathematics.
1/5的年轻人做日常的数学计算都费劲。
《柯林斯高阶英汉双解学习词典》
In the track meet , Jones and Greene cruised through their heats , not noticeably breaking a sweat.
预赛场上琼斯和格林都轻松起步, 看起来毫不费劲.
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Holding any but a very small telescope in the hand is both tiring and difficult.
手里拿着除了一小的望远镜之外的任何望远镜是既费劲又困难.
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