Tau.
[医] 寿命(放射性物质)
🗣️ 情景例句
World-class athletes are extremely fit.
具有国际水平的运动员体格非常好。
What will you wear for the party?
晚会上你穿什么？
His name is Carlos.We're going to get married next week.
他叫卡洛斯。下星期我们就要结婚了。