词族 · half-life
词形变化
英语词源
- 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.
权威例句
- 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。