早期的天文学家认为我们的星球是宇宙的中心。Early astronomers thought that our planet was the centre of the universe.人类对于宇宙的了解已经大为增加。Mankind's knowledge of the universe has increased beyond measure.载人宇宙飞行的前景看上去充满了越来越多的变数。The future for ma...
那只狗老是搔痒.The dog is always scratching.如果你感到痒,就搔好了.Scratch yourself if you itch.温斯顿把手伸下去,小心翼翼地搔他的脚脖子.Winston reached down and cautiously scratched his varicose ulcer....