Tau.
[医] 寿命(放射性物质)
🗣️ 情景例句
Who's Carter Boswell?
谁是Carter Boswell？
He may get a grant to study abroad next year.
他明年也许会获得留学奖学金。
It was true that he had just bought a lamb, he explained, but his lamb was black.
不错，他的确刚买了一只羔羊，阿列科解释说，但他的羔羊是黑色的。