这是平面法向量，和沿直线向量的点积。

It's the dot product between the normal vector of a plane and the vector along the line.

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轻反光玻璃倒映出湖面、草坪和沿东、北、西立面的树木。

The lightly reflective glass mirrors the lake, lawn, and trees along the east, north, and west facade.

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建筑底座的提议用来保护住宅单元免于从道路和沿运河的步行道传来的噪音干扰。

The purpose of the building base is to protect the housing units from the noise nuisance coming from the road and the walkway along the canal.

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So let's just compare. Let's compare what C happened in path A to what happened in paths B and C. Yes?

我们比较一下沿,路径A和路径B和,所发生的事有什么不同，什么？

麻省理工公开课 - 热力学与动力学课程节选

For row one, we're increasing, as we should, across the row.

对于第一行，我们是在升高，和我们预想的沿行的规律一样。

麻省理工公开课 - 化学原理课程节选

The nucleotide has a directionality, there's an up and a down to it and it's going to turn out the chain that's formed by polymerizing these has a directionality as well and that's important in defining the structure.

核苷酸有方向性,有上端和下端,核苷酸长链,是由核苷酸沿一个特定方向聚合而成的,这在定义结构时很重要

耶鲁公开课 - 生物医学工程探索课程节选