(as) slow as molasses

US /əz sloʊ əz məˈlæsɪz/
UK /əz sloʊ əz məˈlæsɪz/
"(as) slow as molasses" picture
1.

慢如蜗牛, 非常慢

extremely slow; moving or happening at a very low speed

:
The old computer runs as slow as molasses.
这台旧电脑运行得慢如蜗牛
Traffic was moving as slow as molasses on the highway.
高速公路上的交通慢如蜗牛