2009年的狮子座流星雨：数量适度但仍值得一观。
它非常值得一观，因为你可以通过参观它了解很多中国历史。
It is worth a visit as you can learn a lot about Chinese history by visiting it.
哥斯达黎加多年来受到环保旅游者的青睐。 但最近该国东北部新开发的观鸟路线，值得你再去一次。
Costa Rica has been on any eco-minded traveler’s radar for years, but with a new birding route in the northeast region of the country, there’s a new reason to pay the country a visit.
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