那是假定了向量场是有定义的。

But that assumes that your vector field is well-defined there.

youdao

实际上我们需要，一个处处有定义的向量场。

We need, actually, a vector field that is well-defined everywhere.

youdao

利用实践社区为新雇员提供一个下文有定义的程序。

Working with the Communities of Practice to provide a ramp-up program for new hires.

youdao

And the temperature scale that turns out to be well-defined and ends up giving us the concept of an absolute zero is the ideal gas thermometer.

比如理想气体温标,它有精确的定义,并能引出绝对零度的概念,今天我们就先来谈谈它。

麻省理工公开课 - 热力学与动力学课程节选

And empathy has different definitions but we can simply view it as the feeling that your pain matters to me.

移情有几个不同的定义,但用简单的话来说就是,我不会对你的痛苦无动于衷。

耶鲁公开课 - 心理学导论课程节选

And there are theories who say that by its definition film is not literary but it's a visual art.

也有理论家认它的定义说明,电影并非文学,而是一种视觉的艺术。

麻省理工公开课 - 电影哲学课程节选