There was something very pleasing in his mild blue eyes. His voice was gentle; you could not imagine that he could raise it in anger; his smile was benign.

他柔和的蓝眼睛令人喜爱，声音非常温和，你想不到他生气时会提高嗓音，而且笑容非常亲切。

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154thirteen years ago, researchers studied a group of 25 infants who showed signs of mild distress when exposed to unfamiliar stimuli such as an unusual odor or a tape recording of an unknown voice.

13年前，研究者研究了一组在受到不熟悉的刺激比如不寻常的气味和未知声音的录音时表现出轻微紧张的25名婴儿。

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Once a mild-manner singer with a soft singing voice and a bright smile, Cai has got rid of his old image.

蔡国庆曾经是一位嗓音柔和，笑容明朗的温柔歌者，而现在他已经完全颠覆了以往的形象。

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