美國也有些delta （河流聚集的三角洲）地帶。沿著河岸去開幾次車就知道，整片都是低窪。左岸右岸不會有劇烈差別

來源: oueeii 於 2023-08-05 11:32:49 [舊帖] [給我悄悄話] 本文已被閱讀：次

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