She was a very calm person. Nothing could fluster her.她是个非常沉着的人。没什么能让她惊慌的。She was put in a fluster by the unexpected guests.不速之客的到来弄得她很慌张.She laughed her parents into a fluster.她笑得父母很慌乱....
This enclosure was so vast that the outermost wall could hardly be seen.这块围场如此之大,几乎看不见最远端的围墙。The outermost electron is shielded from the nucleus.原子核对最外层电子的作用受到屏蔽.Except for the transitional elements, valency electrons ar...