VOA慢速英语:New Drones Could Improve Weather Predictions

短语讲解：

1. Oklahoma is a really good, good example, because even though we're already a very weather-dynamic state, Oklahoma only has two balloon launches a day -- one at dawn and one at dusk -- from a single location in the state, and that's where all the weather forecasting information comes from.

come from 源自; 来自某处; 出生于
例句：Ambient noise may come from any direction.
外界噪声可以来自任意方向。

2. That includes making sure the drones know how to stay away from other planes.

make sure 把事情弄清楚，核实或查明某事物
例句：Make sure the passengers are strapped in(to their seats) before driving off.
开车前请乘客务必系好安全带。
stay away from 与…保持距离
例句：In any case he was going to stay away from the General.
反正他对将军要尽量躲远点儿。