When a large object impacts the Earth, it makes a crater.当巨大物体撞击地球时，就会产生凹坑。With a telescope you can see the huge crater of Ve - suvius.用望远镜你能看到巨大的维苏威火山口.Lava boiled up from the crater of the volcano.熔岩从火山口里滚滚喷出....
With a telescope you can see the huge crater of Ve -suvius.用望远镜你能看到巨大的维苏威火山口。Mauna Loa awoke from a 25 year silence in July 1975, filling its summit - pit crater with lava.莫纳罗亚火山在1975年7月又从沉睡了25年的状态下苏醒过来了, 山顶上的火山口充满了熔岩.Gu...
Methods: The target compound was prepared through a four - step reaction from 4 - bromophenol .方法以 4- 溴苯酚为原料,经4步反应制得目标化合物阿达帕林.A sensitive analytical method of bromophenol - like marine flavors has been established using ...
She was intimidated by the number of businessmen buzzing around the saleroom.拍卖行里乱哄哄谈生意的商人们令她望而生畏。Businessmen are tired of politicians talking the economy down.商人厌烦政客们贬低经济的重要性.The company'sclosure has left many smal...
Forms of gastroenteritis include food poisoning, cholera, and traveler's diarrhea.胃肠炎的病因还有食物中毒 、 霍乱和旅行者腹泻.An inoculation against cholera is recommended.建议注射预防霍乱的疫苗。They feared a new cholera pandemic...他们担心新一轮的霍乱大流行。...