This paper reports the main results of research and development preparation of 0.2 % celangulins emulsifiable concentrate.简要报道植物杀虫剂0.2%苦皮藤素乳油研究与开发的主要结果.He slept badly at night and couldn't concentrate in class at da...
They will concentrate on teaching the basics of reading, writing and arithmetic.他们将集中教授阅读、写作和算术基础知识。We must concentrate our energies on treating addiction first.我们必须首先集中精力治疗毒瘾。A term in prison will concentrate his mind w...
The pellet with the poison's in the vessel with the pestle?带有毒药的小球放在带有杵的容器里?Using a pestle and mortar, pulverise the bran to a coarse powder...用杵和臼，将麸皮磨成粗粉。Using a pestle and mortar, pulverise the bran to a coarse p...
An astronomer can determine the brightness of each star.天文学家能够测定每颗恒星的亮度。A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意.It is the only tangible object the astronomer can handle.这是天文学家能够掌握的唯一可接触的对象....