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。

youdao

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。

youdao

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》

Medical experts say small amounts of carbon monoxide over a long period of time can greatly harm an unborn baby.

VOA: special.2010.02.02

Clearly, important information is to be conveyed to students from people who settle in the fields for a long period of time.

显然，对某个领域,进行长时间研究的学者,会将重要的信息,传达给学生。

麻省理工公开课 - 媒体、教育、市场课程节选

or if it's over a long period of time and it's an ongoing situation that you want to get rid of.

或者是一件持续了很久的事，你特别想摆脱它。

I'm afraid of 课堂 - SpeakingMax英语口语达人

My severe highs and lows that spanned a long period of time were all red flags.

CNN: SHARE THIS

We think that independence has served this country very well over a long period of time.

WHITEHOUSE: Press Briefing

And there are ways to spread that out over a long period of time.

CNN: Giuliani's responses at the CNN/YouTube debate