It generates small particles with random size and velocity and lets them fall onto the surface where they settle, increasing surface height in the place a bit.

它产生随机大小和速度的小粒子，让它们落到图像表面上，使图像产生表面高度小小渐增的效果。

youdao

Despite the country’s small size (mainland and island groups total 77,097 sq km), one may feel a bit overwhelmed (2) with all Scotland has to offer.

尽管只是个蕞尔小国（其主要大陆和岛屿群的总面积仅为77,097平方公里），驻足苏格兰，目睹其人情风物，你却会赞叹不已。

youdao

The area is a little bit small. What size is it?

这个单位面积相对小一点，究竟面积是多少？

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