There is very little separation, even if there is a sense that the sky is impinging on the earth and not the other way around.

即便是有一种，天地相接的感觉,而不是其他的。

耶鲁公开课 - 1945年后的美国小说课程节选

Again, we have continuous electron density from one nucleus to the other.

再说一遍，原子核间有不间断的电子云,相接没有节点，没有空缺。

麻省理工公开课 - 固态化学导论课程节选

If you want to add two vectors, you can add the arrows by the rule I gave you or just add the components of x of the two guys to get the component of the sum and likewise for the y.

如果要把两个矢量相加,你可以用我教给你们的箭头相接的方法,或者就将二者的 x 分量相加,得到和矢量的 x 分量,y 方向也是这样

耶鲁公开课 - 基础物理课程节选