上游水闸或坝以上不受潮汐影响的部分的英文

upriver

• 上游:    the upper reaches ...
• 水闸:    water gate; water ...
• 或:    nǎi-.
• 坝:    dam dyke; embankme ...
• 以上:    more than; over; a ...
• 不:    a block of wood
• 受潮:    be affected with d ...
• 汐:    tide during the ni ...
• 影响:    influence; affect
• 的:    4次方是 The fourth po ...
• 部分:    part; section; por ...