ruthless
/ˈɹuːθləs/ 形容词 C1中文： 残忍、无情
- Without pity or compassion; cruel, pitiless.
- Uncompromising; unrelenting.
来自图书馆
The idea of using a form of poison which could not possibly be discovered by any chemical test was just such a one as would occur to a clever and ruthless man who had had an Eastern training.
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