Celestite is usually diagenetic but commonly forms very early in the history of the sediment.天青石一般是成岩期的,但通常是在沉积史的极早期形成的.Reduction - metathesis method for preparation of strontium carbonate from celestite is developed.提出还...
有一些湿地在古代就形成了。There are some areas of wetland which are of ancient origin.他们不时陷入没膝的湿地。They sometimes sank knee-deep into the marsh.牛群在湿地上吃草。Cows were grazing on the marshes....
绿色和平组织设法聚集起足够数量的小船在海上拦截该船。Greenpeace managed to assemble enough boats to waylay the ship at sea.他在突破警戒线后被一名警察拦截了。He was rugby tackled by a policeman after breaking through police lines.一记坏球让马克·伦纳德在无人拦截的情况下射门。A miskick ga...