1、蝸牛英語:snail,英 [sne?l] 美 [sne?l]。2、蝸牛殼呈螺旋形。A snails shell is spiral in form. 3、火車這會(huì)兒走得跟蝸牛一樣慢。The train was moving now at a snails pace. 4、這些蝸牛體寬不超過1厘米。The snails are no larger than one centimetre across.