采购的

Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation,cyclization and bromination with total yield of 61%.

以2-溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。

It was on a Sunday evening, when he was lying in the orchard listening to a blackbird and composing a love poem, that he heard the gate swing to, and saw the girl coming running among the trees, with the red-cheeked, stolid Joe in swift pursuit.

一个星期天的傍晚，他正躺在果园里，一面听画眉鸟啾啾地叫，一面写一首爱情诗，忽然听见大门砰地关上，接着看见那个姑娘从树丛里奔出来，后面跟着的正是呆头呆脑的红脸汉乔。