1·Smoking a lot of cigarettes can harm and even kill over a long period of time.
长期大量吸烟会危害身体健康，甚至导致死亡。
2·Trackers, which are ongoing projects that look at trends or customer satisfaction over a long period of time.
一个正在进行的项目——“追踪者”，在研究很长一段时期内的趋势或客户满意度。
3·The pots were porous so that, although they could carry water in them, it wasn't possible to store it over a long period.
这些罐子有很多孔，因此，虽然它们可以携带水，但不能长期储存水。
4·Diabetes is caused by a group of metabolic disorders in which there are high blood sugar levels over a long period of time.
糖尿病是由一组代谢紊乱引起的，代谢紊乱后，血糖水平长期偏高。
5·This crisis might last for a long period of time.
此次危机可能会持续很长一段时间。
—— 《柯林斯英汉双解大词典》
6·She died after a long period of increasing frailty.
她日益虚弱，经过一段长时间后去世了。
—— 《柯林斯英汉双解大词典》
7·There followed a long period of confusion and muddle.
接下来是很长一段时间的困惑和混乱。
—— 《牛津词典》
8·She returned to work after a long period of incapacity.
她病了很长一段时间之后回去工作了。
—— 《牛津词典》
9·Be sure to do some eye exercises to relax your eyes after you study for a long period of time.
在长时间学习后，一定要做眼保健操来放松眼睛。
10·In fact, there is another type of friend—one that has not been with us for a long period of time, but fills our mind at some moment.
事实上，还有另一种朋友，他虽然很长一段时间没有和我们在一起，但却会在某个时刻充满我们的心灵。