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There are huge mountains covered with large forests, and wide, irrigable plains with navigable rivers.巨大的山脈都覆蓋著森林, 廣闊 、 可灌溉的平原帶有適于航行的河流....

adj.可灌溉的...

irrigable的音標(biāo)：irrigable的英式發(fā)音音標(biāo)為：['?r?g?bl]irrigable的美式發(fā)音音標(biāo)為：['?r?g?b?l]...