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不遗余力
不遗余力
不遺餘力
bù
yí
yú
lì
ㄅㄨˋ ㄧˊ ㄩˊ ㄌㄧˋ
Phr
⇄ compare
1
to spare no pains or effort (idiom); to do one's utmost
Characters
不
遗
余
力