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巴拿馬運河----船隻的進出港

 
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Published 25 months ago

巴拿馬運河----船隻的進出港 百聞不如一見！ 小時候只在課本上得知大西洋和太平洋的水平面高度不一樣， 所以巴拿馬運河在船隻通過時，會調整水量， 但怎麼調？很抽象，也難以明瞭， 現在看了影片，終於晃然大悟！

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