The closed section isn't heavily used by freight and grain barges, which mostly enter the river further south in Iowa and Illinois for the trip to major export depots in New Orleans.
关闭的河段不是货船及谷物船舶经常行驶的河段，因为这些船舶的起航点大多在衣阿华州和伊利诺斯州更南的地方，它们的终点是新奥尔良的各大出口仓库。
The closed section isn't heavily used by freight and grain barges, which mostly enter the river further south in Iowa and Illinois for the trip to major export depots in New Orleans.
关闭的河段不是货船及谷物船舶经常行驶的河段，因为这些船舶的起航点大多在衣阿华州和伊利诺斯州更南的地方，它们的终点是新奥尔良的各大出口仓库。
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