1·They were surveyed about their diets during high school and their eating habits were tracked for two decades.
该研究调查了她们高中时期的日常饮食，并跟踪她们的饮食习惯长达二十年。
2·In the past couple of weeks a quarrel has illustrated the value to advertisers of such fine-grained information: Should advertisers assume that people are happy to be tracked and sent behavioural ads?
3·Even in the worst case, when a change record starts off as vague or high-level, it is at least being tracked and documented.
即使在最糟糕的情况下，当一个变更记录以模糊的状态或者高层次开始时，它至少要被跟踪和存档。
4·Changes are tracked by file instead of per change, which can be annoying.
变更可以按文件跟踪，而非按变更本身，这点十分讨厌。
5·For this reason, changes to their reference set must be tracked, as we discussed in Write barriers.
出于这个原因，必须跟踪对它们的引用设置的更改，如写入屏障一节所述。
1·Nearby cameras tracked the dogs' eye movements.
旁边的照相机追踪了狗的眼部活动。
2·The Antikythera Mechanism also tracked both the lunar year and the solar year.
安提基西拉机制还追踪了农历年和太阳年。
3·The scientists tracked white storks from different colonies in Europe and Africa.
科学家们追踪了来自欧洲和非洲不同种群的白鹳。
4·Cash transactions are notoriously hard to track, in part because people use cash when they do not want to be tracked.
众人皆知，现金交易难以追踪，其部分原因是，人们就是在不想被追踪的情况下才使用现金。
5·This provides project teams with traceability so that when issues are found during test runs, defects can be entered and tracked back up to the originating requirements.