Ohi
[医][=occupational health institute]职业卫生研究所
🗣️ 情景例句
You're just wasting your breath.
你在白费口舌。
A cock is valiant on his own dunghill.
夜郎自大。
In man's early days, competition with other creatures must have been critical.
在人类早期,人类与其他生物的竞争一定是必不可少的。
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