He said none of the planes leaving Kabul are civilian aircraft and that all evacuees will be taken from Kabul to a secondary point for security checks before flying to the United States.

他说，离开喀布尔的飞机都不是民用飞机，所有撤离人员将从喀布尔被带到一个中转地点接受安全检查，然后再飞往美国。

From this secondary point we  send out a new set of shadow rays to each light source to see whether the point on the wall is  in shadows or whether it's directly illuminated.

从这个次要点，我们向每个光源发出一组新的阴影射线，以查看墙上的点是处于阴影中还是被直接照亮。