Half-value period
[医] 半价期, 半值期
🧩 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;
period
['pɪrɪəd]
n. 时期;（一段）时间;学时;句号;
adj. 具有某个时代特征的;（关于）过去某一特定历史时期的;（家具、服饰、建筑等）某一时代的;
peri周围，靠近+od道路→周期
🗣️ 情景例句
To advertise during prime time TV is very expensive.
在电视的黄金时段买广告是很贵的。
If she could help you, she would help you.
如果她能帮你，她一定会的。[虚拟语气]
His previous attempts had been unsuccessful.
他以前的尝试没有成功。