他真心狠，让驴驮这么重的东西。
It is cruel of him to make the donkey carry such a heavy load.
《新英汉大辞典》
他办事变得同他祖父一样心狠手辣。
He developed into the ruthless operator his grandfather had been.
youdao
你真是 心狠手辣。
You are just 2) ruthless.
他是一个心狠手辣的商人，我是付出了代价才知道这一点的。
He is a ruthless businessman, as I know to my cost.
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