We were approached by the Royal Yachting Association to see if we would loan our boat to them.皇家游艇协会的人找过我们，问我们能不能把船借给他们。I like to go yachting this afternoon.今天下午我去赛快艇.When we've got yachting question, we'll com...
The earth's magnetosphere is at once protective and dangerous.地球的磁层既具有保护的功能，却又极其危险。This animation shows a conceptual sketch of Mercury's magnetosphere at the time of the MESSENGER flyby.这个动画是信使号探测船探测水星磁层时的模拟图.A...