太空旅行是如此令人愉快,但同时又存在无形的危险。
Space travel can be so delightful but at the same time invisibly dangerous.
全球经济衰退导致乘客数量减少;与此同时,那些经常旅行的人也没有那么多钱可以花了。
The global economic downturn has caused a reduction in passenger numbers while those that are traveling generally have less money to spend.
在学习新知识的同时,我也会向你展示旅行的重要性。
I'll also show you the importance of the trip while learning something new.
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