Judging by its rig, I'd say it was a fishing boat.
从船具装备来看，我认为这是一艘渔船。
According to the principle of dynamic analogy, the try net used for double - rig shrimp trawling on Sierra Leone fishing ground is studied and designed in this paper.
本文应用动力相似原理，研究设计了塞拉里昂渔场双支架虾拖网的试验小网，用来判断渔场资源和中心渔场。
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