(as) slow as molasses
US /əz sloʊ əz məˈlæsɪz/
UK /əz sloʊ əz məˈlæsɪz/

1.
매우 느린, 느릿느릿한
extremely slow; moving or happening at a very low speed
:
•
The old computer runs as slow as molasses.
오래된 컴퓨터는 매우 느리게 작동한다.
•
Traffic was moving as slow as molasses on the highway.
고속도로에서 교통이 매우 느리게 움직였다.