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.宇宙的浩瀚难以捉摸。The immensity of the universe ...
From the structure of the circuit is divided into cross - straight - to pay and pay - cycloconverter .从其电路的结构上分为交 — 直 — 交和交 — 交变频器.Circuit - oriented model of cycloconverter is developed by adding tube - changing mode an...
Fill in gaps by using short, upward strokes of the pencil.用铅笔向上短短地勾画几道来填充空白。There were gaps in their counterterrorist strategy.他们的反恐战略存在漏洞。Contraction of the timbers left gaps in the fence.木料收缩,结果围墙露出缝来....