于是,这种鹿便在中国绝灭了.So the deer perished in China.这样一来却使它们免于绝灭.In doing so they were saved from extermination.化石与现存类型之间的这种依赖关系在我们研究绝灭类群时是十分明显的.This dependency between fossil and living types is well illustrated when we deal wi...
They replaced trams by buses.他们用公共汽车代替了电车.Trams in London have been supplanted by buses.伦敦的电车已经由公共汽车取代了.He economized by using trams instead of taking a taxi every time he went to school.他上学搭电车而不坐出租汽车,以节省钱....
The lawn needs mowing.这草坪的草该割了.They are lying on a grassy lawn.他们躺在绿草如茵的草坪上。The traditional lawn has been replaced by low-cost terracing, with a raised pool and waterfall.传统的草坪已经被低成本梯田所取代，梯田上有个高位水塘和瀑布似的水流。She ran swiftly...
挤压 式 发动机对推进剂中溶解的气体特别敏感.Pressure - fed engines are particularly susceptible to dissolved gas in the propellants.石墨甚至其线性类似物, 聚 ( 名聚-苯撑 ) 都是极难溶解的.Graphite and even its linear counterpart, poly ( p - phenylene ) are too inso...