You can keep track of the tornado around the current situation.
能让你随时追踪记录当下各地的龙卷风现况。
Computers keep track of goods in stock, of raw materials on hand, and even of the production process itself.
计算机能对仓库中的货物、手头的原材料、甚至产品自身的生产过程保持追踪。
Keep track of the time you actually travel.
把你旅行的实际时间记录下来。
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