He was a printer by trade and naturalist by avocation.他从事印刷业，同时是个博物学爱好者。The English naturalist W. H. Hudson was born in Argentina.英国博物学家W. H. 哈得逊出生在阿根廷....the prominent naturalist and broadcaster, Sir David Attenborough....
A vacant lot or a bombsite can, to the amateur naturalist, produce an extraordinary variety of flora and fauna.对于业余博物学者来说，在一片空地上或被炸后的废墟里可能发现种类繁多的植物群和动物群。He was a printer by trade and naturalist by avocation.他从事印刷业，同时是个博物...
怀尔德摔倒了，头撞在石头地上。Wilde fell and struck his head on the stone floor.他无法确定地板是木头的还是石头的。He could not tell whether the floor was wood or stone.有人把一大块石头给凿空了。Someone had hollowed out a large block of stone....
他的母亲是一位端庄文雅的女性。His mother was an elegant, cultivated woman.你是够文雅的, 看上去象个大家闺秀.You are genteel enough, you look like a lady.在人行道上吐痰是不文雅的.It is not respectable to spit on the sidewalk....
It is not a unique instance , but has its counterpart.无独有偶.There are jobs more dangerous than truck driving; for instance, training lions.有的工作比驾驶卡车更危险, 例如驯狮.This was the instance that occured first to my mind.首先在我脑中闪现的就是...
南美洲和北美洲由一条运河连在一起.South America is joined to North America by a canal.南美洲和北美洲相连.South America is jointed to North America.这里采用的符号和表示方法实际上是北美洲通用的.The symbols and notation used herein are essentially those in current use in...