half-life
英 ['hɑ:flaif]
美
- n. [核] 半衰期
英英释义
- 1. the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
实用场景例句
- The translator who devoted half life on the translation business are just for a penny.
- 人家浸淫半生,为的都是那一把铜钱.咱们半生辛劳,对那孔方兄,何时不是横眉冷对?
期刊摘选
- The Sun is near half life expectancy.
- 太阳快到其生命的一半了.
期刊摘选
- Confucius has a half life time, are engaged in education work.
- 孔子一生中有一大半的时间, 是从事教育工作.
期刊摘选
- The fervor is half life, indifferent is half death.
- 激情是半个生命, 冷漠是半个死亡.
期刊摘选
- One waiting of whole life, half life grief.
- 一生的等待, 半世的哀愁.
期刊摘选
词态变化
复数: half-lives;
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。
来自柯林斯例句
- 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。
来自柯林斯例句
- 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。
来自柯林斯例句
- 4. The curtains were half drawn to cut out the sunlight.
- 窗帘拉上了一半以遮挡阳光。
来自柯林斯例句
- 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。
来自柯林斯例句