妈妈,我们谈话时你不必陪着.Mommy, you don't need to stay while we talk.他谈话时，一架军用喷气式飞机在镇子上空呼啸而过。As he talked, an airforce jet screamed over the town.创作这本书的想法来源于跟菲莉帕·布鲁斯特的谈话。The idea for this book grew out of conversations with Ph...
azimuth quadrant地平象限仪The cells of the quadrant in turn become partitioned to from the eight - celled embryo.四分体细胞于是分裂形成八细胞胚.upper quadrant上象限Notice particularly clear cells upper left quadrant of field.观察左上角视野,细胞显示尤为清晰.A...
这几个盆地的底部有沙漠 、 湖泊和沼泽.On the floor of the basins lie deserts, lakes and swamps.周围的地低洼而多沼泽.The surrounding land is low and marshy.士兵们陷在沼泽中.The soldiers became bogged in the swamp....
火星的大气层极其稀薄，几乎全部由二氧化碳构成。Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.火星的大气层中只含有极少量的水。The Martian atmosphere contains only tiny amounts of water.空间站在重返地球大气层时会被烧毁。The station would burn...