1.蜗牛英语:snail,英 [sneɪl] 美 [sneɪl]。
2.蜗牛壳呈螺旋形。A snails shell is spiral in form.
3.火车这会儿走得跟蜗牛一样慢。The train was moving now at a snails pace.
4.这些蜗牛体宽不超过1厘米。The snails are no larger than one centimetre across.