The error of the frame and the trail which make the crane not in parallel with the rail track is the cause of off-tracking.

在实际治理啃轨现象的工作中，一般是以提高车架和车轮的安装精度，校正和消除起重机和轨道的缺陷为主要方法。

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Few switch DNT on now, but if tracking is off it will stay off.

现在很少有人打开“禁追踪”选项，但如果追踪选项处于关闭状态，它就会一直处于关闭状态。

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They spent weeks tracking and recording the hunting behaviour in the pack ice off the coast of the Antarctica Peninsula.

他们花了几个星期的时间在南极洲的半岛的冰盖上跟踪和记录虎鲸的狩猎的行为。

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This one provides off-line GPS tracking (read: cheaper than real-time) of your vehicle so you can see when, where, how fast and how aggressively your teen is abusing the family getaway-mobile.

ENGADGET: DriveSync tracks your kids' joyrides

There are plenty of off-the shelf-solutions for inventory tracking, sales, fulfilment (both digital and physical), the whole nine yards.

FORBES: Ebook Price War Obscures Larger Problem

In December, it launched a program called AskEraser, designed to let privacy-conscious users turn off all tracking of their search history by the site.

FORBES: Magazine Article