火星环球探测者已经发现了看起来是在接近现代的时间里被水冲刷出来的河床。

The Global Surveyor found gullies that appear to have been cut by water in relatively modern times.

youdao

火星环球探测者已经发现了看起来是在接近现代的时间里被水冲刷出来的河床。

The Global Surveyor found gullies that appear to have been cut by water in relatively modern times.

youdao