A truly formidable or dangerous person does not reveal their true strength or intentions easily; they often appear unassuming or reserved.
他平时不爱说话，看起来很温和，但关键时刻总能解决大问题，真是咬人狗儿不露齿啊。
He usually doesn't talk much and appears very gentle, but at crucial moments, he always manages to solve big problems. He's truly a person who doesn't reveal his true strength readily.
Era:
Ancient
Frequency:
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