The progresses in five - membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed. 综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用.
I trailed her into Penney's and struck up a conversation.我跟着她进了彭尼家然后开始交谈起来。I trailed her to a shop in Kensington.我跟踪她来到肯辛顿的一家商店。He trailed through the wet Manhattan streets.他没精打采地走过曼哈顿湿漉漉的街道。...
Any more raffle tickets? Twenty-five pence each or five for a pound.还有要买奖券的吗？每张25便士，1英镑5张。The money was raised by the sale of raffle tickets.这笔款子是通过出售购物彩券筹集的.The draw for the raffle takes place on Saturday.抽彩仪式星期六举行....
Rationing had put an end to a surfeit of biscuits long ago.定量供应很久以前就结束了饼干过剩的状况。The time has come to put an end to the conflict.结束冲突的时候到了。Only a political solution could put an end to the violence.只有政治解决方案才能终结暴力。...
钙通过尿液和粪便排出体外。Calcium is excreted in the urine and stools.幼虫会连同粪便排出.The larvae may be excreted in the faeces.粪便含氮，而正是氮可以肥化荒芜的土地。The faeces contain nitrogen and it is that which fertilises the desert soil....