I watch his face while he accounts for the past decade and a half of my life, a period during which he was probably spending his summers in Europe.
我望着他的脸，他讲述过去十来年，那十年是我人生的一半时间，在这段期间他可能在欧洲度过了每个夏天。
2
As with radioactivity, stories have a half-life-in other words a period by which half of newly promoted stories are relegated to a nether page.
与放射性一样，故事有一个半衰期-换言之，就是新推荐的故事从首页到被下放的周期。
3
Researchers coaxed the dormant frozen microbes, back to life by carefully warming the ice samples containing them over a period of 11-and-a-half months.