The ground had opened to disgorge a boiling stream of molten lava.大地开裂，汩汩冒出炽热的熔岩。She was trying hard to disgorge a fish bone.她拚命想把鱼刺吐出来.They pursue other birds, forcing them to disgorge the fish they have caught.它们追赶别的鸟儿...
窗户通常是封闭的。Windows are usually sealed off.他们接触的事不多，从这一方面来说这是个封闭的社团。It is a closed society in the sense that they've not been exposed to many things.宇宙究竟是开放的,还是封闭的?Is the universe open or closed?...
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...