在河流入口处保护三角洲的堤岸也处于危险之中。
Levees protecting the delta at themouth of the river are in bad shape, too.
在河流入口处保护三角洲的堤岸也处于危险之中。
Levees protecting the delta at the mouth of the river are in bad shape, too.
这样，也能帮助你吹开嘴边的水，防止其在呼吸时流入口中。
It also helps clear the water away from your mouth for the next breath.
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