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Chinese dictionary
n.natural instincts; nature
他天性不爱说话。
He is sparing of words by nature.
天性聪慧
be intelligent by nature
他天性开朗。
He has a happy nature.
喜新厌旧是人类的天性。
It's only human nature to love the new and loathe the old.
天性温良
good-natured