借助小型望遠鏡可以看清月球上的環(huán)形山.Lunar craters can be plainly seen with the aid of a small telescope.在月球的高地上留下無數(shù)環(huán)形山,有的直徑達236千米.The lunar highlands are scarred by innumerable craters ranging up to 236 km in diameter.水星上的大環(huán)形山周圍有很多小的環(huán)形山圍...