defoliator|defoliators

农民在收获前使用落叶剂来清除棉花田里的叶子。

Farmers use a ___defoliator to remove leaves from cotton fields before harvest.

农民们正在与蚕食玉米叶的害虫作斗争。

Farmers are fighting against ___defoliators that are eating the corn leaves.