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First of all, based on the aid of AIS (Automatic Identification System), which can give us the target ship's accurate data and will implement in 2002, we study own ship's relative motion to target vessels, define DCPA and its sign, give mathematic model of collision avoidance, produce the optimal opportunity and action taking of collision avoidance, and obtain a graph of action-taking.

论文首先在2002年将要开始实施的船舶自动识别系统所能提供的准确目标船信息的基础上，研究本船相对于目标船的运动，定义DCPA的大小和符号，推导出船舶避碰数学模型，给出船舶最佳避让行动与时机，得出避让行动曲线图，并且明确最佳避让行动时机不是某个点，而是一个时间段。

If your cough doesn't go away, or if you develop acute bronchitis frequently, it may be a sign of a more serious condition.

如果你的咳嗽还不完全好，或者经常性的发生急性支气管炎，这可能是更严重病症产生的信号。

Remember, battle against arguments - not people - ad hominem attacks are a sign of a failed argument.

记住，只是反对论据——而不是人——人身攻击是争论失败的标志。

Usually the Adam's apple jump is a sign of anxiety.

通常喉结跳动是焦急的信号。

In addition, a deep sign is often a release of worries and heavy thoughts.

另外，一个强有力的呼气经常是烦恼和沉重思想的释放。

In addition, the auspicious sign and calamity had been affected the culture and psychology of ancient China.

另外，祥瑞灾异对中国古代的文化以及人们的心理也產生了重要影响。

In addition, they will sign relevant cooperation documents.

双方还将签署有关合作文件。

If this is the adhesive, then will be a serious cause of infertility, in addition there was no sign.

如果真是粘连的话，严重的就会引起不孕，除此之外没有任何迹象。

In addition a players' astrological sign can play a role in their stats.

同时，玩家星相也会在属性中起作用。

Addition using the plus sign was always the same. In programming languages, this may not be as straightforward because there are different types of numbers.

自然而然的，加法总是使用+号，然而在计算机语言看来这件事没那么简单，因为数字又有很多不同的类型。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。