1.
In some, a destructive fishing practice called bottom trawling, which scours life from the ocean floor, is permitted.
有些地区对海洋底层生物掠夺性捕捞的破坏性底层拖网式捕捞事实上是允许的。
2.
As the sampler is dragged along the bed, it collects a sample from the top layer of bed material.
取样器沿河底拖动，收取表层河床质。
3.
STUDIES ON THE DEMERSAL FISH COMMUNITY OF NORTHERN SOUTH CHINA SEA. Ⅰ.CHANGES OF SPECIES COMPOSITION IN CATCHES OF BULL TRAWLER IN THE GULF OF NORTH PART(TONKIN GULF).
南海北部底层鱼类群聚的研究——Ⅰ.北部湾拖网渔轮渔获物组成的变化
4.
The Study on Macrobenthos by Bottom Trawling in the North Yellow Sea
北黄海大型底栖动物的拖网调查研究
5.
The definition of a dragnet is a net that is pulled along the bottom of a river or lake, to bring up anything that may lie there.
拖网的定义是一张网沿著河底或湖底拖拉，以起可能停留在那里的任何东西。
6.
To search or sweep the bottom of(a body of water, as with a grappling hook or dragnet.
搜寻用抓钩或拖网在水底进行搜寻或打捞
7.
INJURY DONE TO JUVENILE FISH BY THE METHOD TO ENHANCE PENAEUS CHINENSIS THROUGH RECAPTURE WITH BOTTOM TRAWL
底拖网回捕增殖对虾对经济幼鱼的损害
8.
AN APPROACH TO ADJUSTING THE FISHING EFFORT ON THE TRAWL FISHERY IN EAST CHINA SEA AND HUANGHAI SEA
东、黄海底拖网渔业渔捞努力量修正方法的探讨
9.
Quantitive Risk Evaluation of Subsea Pipelines under the Operation of Trawling;
海底管线关于拖网作业的定量风险评估
10.
Level 3 corresponds to the bottom of the OSI Layer 3 (Network Layer)
第3级对应于OSI第3层（网络层）的底部
11.
Min-water trawl techniques for fishing Chilean jack mackerel in the southeastern Pacific Ocean
东南太平洋智利竹?鱼中层拖网捕捞技术
12.
Comparison Study between Jack Mackerel Mid-water Trawls and Haddock Trawls on Their Structures and Characteristics
智利竹筴鱼中层拖网设计参数与作业性能分析
13.
Networks are the underlying infrastructure that is used by the wireless carriers.
网络是无线载波使用的底层基础架构。
14.
Combined ANN forecast of water-inrush from coal floor
煤层底板突水组合人工神经网络预测
15.
Design of Network and Hard Disk Separate Card Based on PCI Bus
基于PCI的网络与硬盘底层隔离卡设计
16.
One that drags, especially a vessel using nets dragged along the bottom to catch fish.
拖网拖东西的人或物，尤指拖网捕鱼船
17.
And my slippers leak."
连我的拖鞋都漏了底儿。”
18.
drag, usually the bottom of a body of water.
通常指从水的底部拖拉。