elbow grease
US /ˈel.boʊ ˌɡriːs/
UK /ˈel.boʊ ˌɡriːs/

1.
体力劳动, 艰苦工作
hard physical work, especially vigorous polishing or cleaning
:
•
This old car needs a lot of elbow grease to get it shining again.
这辆旧车需要大量的体力劳动才能再次闪亮。
•
Cleaning the entire house will require some serious elbow grease.
打扫整个房子需要付出很大的体力劳动。