heavy lifting
hea
ˈhɛ
he
vy
vi
vi
lif
lɪf
lif
ting
tɪng
ting

英語での「heavy lifting」の定義と意味

heavy lifting
01

the hardest or most important part of the work 

慣用句
The software handles the heavy lifting, so users only need to enter basic information. 
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