In remote regions, the air is pure and the crops are free of poisonous insecticides.在偏远地区，空气很纯净，庄稼也不施用有毒的杀虫剂。Objective To find methods for testing quickly if there were organophosphate and carbamate in insecticides.目的快速检...
Confine the use of insecticides to the evening and do not spray plants that are in flower.只在晚间使用杀虫剂，而且不要对正在开花的植物喷药。In remote regions, the air is pure and the crops are free of poisonous insecticides.在偏远地区，空气很纯净，庄稼也不施用有毒的...
There have been scores of kidnappings by political extremists in the past year.去年就有政治上极端分子所作的很多起绑架案.The region has kidnappings targeting foreign firms in the past two years.过去两年来,这个地区曾发生多起针对外国公司的绑架案.The mass kidnappings ...
The new tax and the drop in house values make homeowners feel doubly penalised.新的税制及房价的下跌让房主觉得受了双重打击。It's only a four-foot drop.仅有 4 英尺的落差。The examiners can drop on any student to answer questions.主考人可以叫任何学生回答问题.The...