Tau.
[医] 寿命(放射性物质)
🗣️ 情景例句
you had some doubts about wanting to go to Michigan.
你对上Michigan大学有些疑虑。
All is not gold that glitters.
闪闪发光的不见得是金子。
Oh, hi, Jim! What are you going to do next week?
噢，你好，吉姆！你打算下星期做什么？