例句與造句

1. X-ray astronomy has made impressive progress .
   X射線天文學已取得了引人注目的進展。
2. Contribute a little to either ultra-violet astronomy or x-ray astronomy .
   所以氣球攜帶的儀器對紫外線天文學或Ｘ射線天文學的貢獻是不大的。
3. The renowned american satellite uhuru exemplifies the capabilities of x-ray astronomy .
   著名的美國“烏呼魯”衛星充分顯示了X射線天文學的威力。
4. It's difficult to find x-ray astronomy in a sentence. 用x-ray astronomy造句挺難的