英语语法分析

He was 44, divorced, his backyard overrun with crabgrass.

他44岁，离异，后院长满了杂草。

Crabgrass is usually best handled by the use of a pre-emergent.

马唐通常是最好的处理由前使用紧急。

The compound has good herbicidal function to crabgrass and abutilon.

本发明的 化合物对马唐、苘麻具有良好的除草作用。