英语语法分析

See pictures of Perseids past.

如图往昔英仙座流星雨图片。

The Perseids in 2015, seen from Switzerland.

2015年在瑞士看英仙座。

The last time a special Perseids shower like this one occurred was in 2009.

上一次这样壮观的英仙座流星雨出现在2009年。