短语 at a snails pace1（以蜗牛的速度） 的意思是 像蜗牛爬行一样，速度很慢。
例句
The traffic is moving at a snails pace so were going to be late.
交通速度慢得像蜗牛一样，所以大家要迟到了。
Im so tired. Im only working at a snails pace today.
我太累了。我今天工作的速度慢极了。
The building work is only progressing at a snails pace.
建筑工程进展很缓慢。