并可利用在水面上的回程刮板收集漂浮在水面上的浮渣、垃圾及浮油等。
The return flights can also be made use of to collect some things like floating sludge, rubbish and oil slick on the water surface.
并可利用在水面上的回程刮板收集漂浮在水面上的浮渣、垃圾及浮油等。
The return flights can also be made use of to collect some things like floating sludge, rubbish and oil slick on the water surface.
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