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[电] 千亿分之一法
🗣️ 情景例句
You know, man's best friend is his dog.
你知道的，类最好的朋友就是狗。
He who wants a mule without fault, must walk on foot.
如要骡子无缺点，只有自己徒步行。
The doctor examined the soldier's wound carefully.
大夫仔细检查了战士的伤口。