The possibility of its potential application is discussed for separation of actinon - lanthanon mixtures by ion exchange.讨论了该离子交换法在分离锕 - 镧系元素上应用的可能性....
我知道那根本没什么大不了的,所以有些无动于衷。I know it's nothing serious and I feel quite unemotional about it.她是个非常沉着的人。没什么能让她惊慌的。She was a very calm person. Nothing could fluster her.这种产品看起来和点燃后都与常见的香烟没什么两样。The product looks and burns ...
Go down to the intersection cross at the zebra crossing.你应该到十字路口那边走斑马线.A zebra crossing is not only seen at the zoo.斑马的条纹可不只动物园才有.Take the zebra crossing, pedestrian overpass or underpass to cross the road.过马路要走斑马线 、 人行天...