Control villages resembling project villages in terms of population size were randomly selected from an area enclosed by two ellipses centred around, but not including, the project area.
从由两个椭圆围绕封闭而成的区域中随机抽取与项目村庄拥有类似人口规模的对照村庄,但不包括项目区域。
According to the characteristics of the two system of the power plant, the production control area is divided into the control area (safe I area) and the non control area (safe II area).
根据电厂二次系统的特点,生产控制大区被分为控制区(安全I区)和非控制区(安全II区),各分区包含不同的具体业务。
Wynwood has been able to successfully control the mosquitoes because of aerial spraying of two kinds of mosquito insecticide, but the area should not relax its vigilance.
温伍德之所以能成功控制蚊虫,是通过飞机喷洒两种灭蚊剂的结果,但当地不应放松警惕。
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