Ehl
[医][=effective half-life(of radioactive substances)]（放射性物质的）有效半衰期
🗣️ 情景例句
Service like this deserves a really good tip.
这样的服务值得拿优厚的小费。
Thank you for helping me.
谢谢你帮了我的忙。
Mrs.Sterling got so angry that she ran after them.
斯特林夫人非常气愤，向着他们追了过去。