Half life
[医] 半衰期(放射性物质), 半存留期(化学性物质)
🧩 词语组成解析
half
[hæf]
adj. 一半的，半个的;
n. 半;一半;（啤酒等饮料的）半品脱;（比赛、音乐会等的）半场;
adv. 一半;部份地;
life
[laɪf]
n. 生活，生计;生命，性命;一生，寿命;人生，尘世;
🗣️ 情景例句
Why don't you call back later this afternoon?
你何不今天下午再来电话呢？
A new bicycle is out of the question - we can't afford it.
买新自行车的事谈不上 —— 我们买不起。
All right. I will send the information on a piecemeal basis as we acquire it.
好。我们收齐之后会立即寄给你。