可灌溉的;
while in water and irrigable land, the mean, variance was a little bit low, the grey level was symmetry;
水体和灌溉耕地的均值、方差值很低,灰度值均匀,内部变化小;
There are huge mountains covered with large forests, and wide, irrigable plains with navigable rivers.
巨大的山脉都覆盖着森林, 广阔 、 可灌溉的平原带有适于航行的河流.
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