在沼泽,湖泊和无法绕行的河流中行进,考虑以下几点。
K. Consider the following for swamps, lakes, and unfordable rivers.
想一想那些人们可以绕行的收费公路,比如英国那条光荣的无人大道—M6公路。
Think of toll roads that can be bypassed, such as the gloriously empty M6 in Britain.
这颗行星所绕行的是一颗暗淡的红矮星,距地球20光年远,名为Gliese 581。
The planet orbits a dim red dwarf star 20 light years from Earth called Gliese 581.
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