英语语法分析

Radars used to track storms can detect water in the atmosphere only once it has condensed into clouds or raindrops.

用于跟踪风暴的雷达只能在大气中凝结成云或雨滴后才能够探测到水。

The lasers by the runways act a bit like radars.

机场跑道两侧的激光起到一些类似雷达的作用。

And in the next few years, those radars will be upgraded.

在接下来的几年里，这些雷达还会被更新。