A snail is a small animal with a long, soft body, no legs, and a spiral-shaped shell. Snails move very slowly.
PHRASE
慢吞吞地;緩慢地
If you say that someone does something at a snail's pace, you are emphasizing that they are doing it very slowly, usually when you think it would be better if they did it much more quickly.
例句
The train was moving now at a snail's pace...火車這會兒走得跟蝸牛一樣慢。The economy grew at a snail's pace in the first three months of this year.今年第一季度經濟增速緩慢。