metham

Patricia metham, the headmistress, said the number of applicants from mainland China had trebled in the past three years.

女长帕特里夏·梅塔姆说，从中国大陆来申请数量去3年已翻了三番。

Chlorpyrifos was one kind of organophosphorus pesticides with higher efficacy and could substitute highly poisonous metham-sodium and parathion.

毒死蜱是替代甲胺磷和对硫磷等毒农药效有机磷杀虫剂,在世界范围得到广泛使用。