这个温室位置绝佳，放眼望去，草木繁茂，郁郁葱葱。This conservatory enjoys an enviable position overlooking a leafy expanse.这块地从草木茂盛的狭长地带一直伸展开来。The land sweeps away from long areas of greenery.秋天临近，花园中的草木和颜色也发生了变化。As autumn approached, the plants...
Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.In the presence of ethanonitrile and glycol, anisole reacts with ammonium ceric nitrate to form o - nitroanisole.在乙腈、聚...
在许多应用场合,波动的直流电是讨厌的.In many applications a fluctuating DC current is undesirable.他是个情绪波动的演员(演得好坏由心情而定).He's avery temperamental player, ie plays well or badly accordingto his mood.他们波动的回声中带有一种难言的悲哀.In their echoes, t...