aquatic weed cutter [水运] 水草切除器
aquatic weed control 防除水生杂草
aquatic weed growth 水草的生长
aquatic weed harvester 水草收割机
Courses may include plant physiology, biochemistry, current pesticide regulations, forest pest suppression, chemical decontamination, and aquatic weed management.
课程包括植物生理学、生物化学、除虫剂使用规章、森林虫害预防、有害化学物质清理和水环境清理。
In order to eliminate the weed, biologists proposed treating infested parts of the lake with a certain herbicide that is nontoxic for humans and aquatic animals.
为了消除这种杂草，生物学家建议用某种对人类和水生动物无毒的除草剂来处理受感染的部分湖泊。
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