During the track-keeping control, the relativity between the current ship position and the set track must be confirmed.

在进行航迹控制时，必须确定当前船位与设定航迹的相对关系。

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The architecture, functions and interface class design of the system were described. An example for testing algorithm of track-keeping was proposed.

详细介绍了该测试平台的体系结构、系统功能、接口设计，并以船舶航迹保持算法为例仿真测试了该算法对一艘商船的控制效果。

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She won millions of dollars at blackjack by keeping track of the aces and face cards played.

通过跟进已打出的幺点和花牌，她在21点上赢了数百万美元。

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Anything where you're actually keeping track of something like a score that's having a variable that you increment -- plus, plus, or decrement, minus, minus, using the appropriate puzzle piece could certainly be compelling.

你需要保存像分数这样的事物时,你就需要一个变量,它可以自加，++，或者自减,要使用正确的拼图。

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The challenge for her company, the Oakland, California-based Mannequin Madness, was keeping track of an ever-changing inventory of heads, torsos and limbs, so it could meet the varied needs of a diverse client list of clothing boutiques and department stores.

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Nobody seems to be keeping track--or paying attention to phones hooked up to the wrong rate plan, leading to punitive charges for extra minutes.

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Track everything -- While keeping a food journal is important for all dieters, it is particularly important if you don't have much weight to lose, as even small, seemingly inconsequential things like a slice of cheese or mayo on a sandwich, a larger size non-fat latte, or a second glass of wine, juice or soda, can interfere with weight loss.

CNN: How can I maintain my energy level for sports while on a diet?