弘扬中华文化·传承国学经典

half-life是什么意思

half-life

英 ['hɑ:flaif] 美

n. [核] 半衰期

英文词源

half-life (n.): also halflife, half life, 1864, "unsatisfactory way of living," from half + life; the sense in physics, "amount of time it takes half a given amount of radioactivity to decay" is first attested 1907.

双语例句

1. Elliott crossed the finish line just half a second behind his adversary.: 埃利奥特跨过终点线时仅比对手落后半秒钟。

2. She'd half expected him to withdraw from the course.: 她多少已经预料到他会中途就退出这门课程。

3. The French, who led 21-3 at half time, scored eight tries.: 上半场以21：3领先的法国队有8个达阵得分。

4. The curtains were half drawn to cut out the sunlight.: 窗帘拉上了一半以遮挡阳光。

5. From what I hear, half the campus is lusting after her.: 从我听到的来看，半个学校的人都想和她上床。