Whatever the convention is within a system of differences, that's what makes the sign intelligible.
这些惯例存在于一个有差别的系统中，这就让符号变得有意义了。
So to make things simpler we are using this convention and you just put a minus sign if you are doing physics.
我们只是借用了这个物理概念来简化问题，你算物理题的时候加个负号上去就好了。
As a sign of culture, the dress has recorded every minute change of trend and convention that occurred by the social transition.
服饰作为文化的一种表征，完整记录了每一次社会转型中风尚习俗的细微变化。
It is now necessary to introduce a sign convention for radii of curvature.
现在必须介绍曲率半径的正负号规则。
The link between a linguistic sign and its meaning is a matter of convention.
语言学上的符号和它的意义之间是约定俗成的关系。
The link between a linguistic sign and its meaning is a matter of convention.
语言学上的符号和它的意义之间是约定俗成的关系。
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