英语语法分析

The crash had spilled a noxious defoliant into the planet's ecology, ravaging the native flora.

这次坠毁将一种有害的落叶剂洒入星球的生态系统中，破坏着当地的植物群。

I had worked for nearly a year in a rubber plantation area sprayed with the toxic defoliant Agent Orange.

我还在一个橡胶园的地区工作了接近一年，那里到处喷洒着橙剂，是一种有毒的脱叶剂。

Through statistical observation of falling leaves, a more ideal formula of the defoliant was developed.

并且通过对落叶规律的观察统计，筛选出比较理想的悬铃木落叶剂配方。