be unsparing in one's efforts
遗余力
宽恕
,留情;让步;,残忍;;;;;
;
;,令人痛苦;;be unsparing in one's efforts
遗余力
an unsparing superior officer; unsparing criticism.
一名苛严
上级军官；留情面批评
he is unsparing in his criticism of the arms trade.
他对军火交易进行无情批评。
she had won her mother's unsparing approval.
她赢得母亲慷慨赞许。
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