这些蜗牛体宽不超过1厘米。The snails are no larger than one centimetre across.出席的人不超过20名.There weren't beyond twenty people present.一种体积不超过10便士硬币大小的新机器能防止婴儿猝死。A new machine no bigger than a 10p piece could help save babies from ...

“不超过”的英语可以翻译为：[计] not exceeding ...