This time I used the Pen Tool (P) , because it has the possibility to make nice curves.
这一次我用钢笔工具（规划），因为它有可能使好曲线。
And the bubble line. Sometimes, instead of having a nice separation between the bubble and the dew line, there's a special point which for some reason those two curves meet. Non-ideality.
这是汽化线，有时汽化和液化曲线没有完全分开，因为某些原因，这两条线会在某个点相交，非理想情况。
OK, so let me show you a nice example of why we might want to use vectors to study parametric curves because, after all, a lot of what's here you can just do in coordinates.
我来举个例子，解释为什么我们用向量来学习参数曲线，毕竟我们学了这么多的都只能在坐标上完成。
A shift dress will give you an ample amount of coverage and has nice seaming details that can help define the curves of your body for you.
连衣裙将提供充足的覆盖面，而且有漂亮的接缝细节，来帮助你凸显身体的曲线美。
A shift dress will give you an ample amount of coverage and has nice seaming details that can help define the curves of your body for you.
连衣裙将提供充足的覆盖面，而且有漂亮的接缝细节，来帮助你凸显身体的曲线美。
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