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There is already evidence that such fish population changes have occurred since the mid-1960s. 已经有证据证明,自从六十年代中期,这种鱼群已有变化。
Catching more fish only erodes the restoration capacity of the fish population even more. 捕获更多的鱼只会进一步侵蚀鱼类的恢复能力。
Researchers believe the guppies are using sex as a way of suppressing the native fish population. 研究人员相信虹鳉将性攻击作为抑制本地鱼数量的一种方式。
The dam further imperils delicate fish populations in the Yangtze. 大坝更加威胁到长江中脆弱的鱼的族群。
On the fish population, the only severe punishment imposed for all kinds of outrages, which are valuable of the feudal rulers. 对鱼肉百姓，胡作非为之徒严惩不怠，这些都是封建统治者难能可贵之处。
Shunshen ting was taken afterxian ya , mighty indomitable, castigatedkong qing 荃magistrate is corrupt officials, pocketed fish population. 申庭顺被带到县衙后，威武不屈，痛骂知县孔庆荃是贪官污吏，中饱私囊，鱼肉百姓。
That change in chemistry has led to staggering alterations in the lake's ecology, causing precipitous drops in the Aral Sea’s fish population. 化学成分的改变极大地改变了湖区的生态环境，导致咸海鱼类数量剧减。
Fish populations assume highly localized distributions within each river. 鱼群分布集中在每条河的某些区域。
In recent years, declining fish populations have decreased fishing revenue and forced many owners to stop fishing altogether. 近年来，鱼类数量的减少已降低了渔业的收益，迫使许多渔船主人彻底停止了捕鱼。
Fish were surfacing to catch insects. 鱼浮到水面上捕捉昆虫。
One of the fishing boats sank down astern of us. 有一艘渔船在我们后面沉没了。
The two boys decided to play truant and go fishing. 这两个男孩决定逃学去钓鱼。
The researchers say damage to oceans affects not only fish populations but also the productivity of ecosystems. 研究人员认为对海洋的破坏，不仅影响鱼类数量，还影响生态系统的生产力。
The cupboard was stuffed with old fishing tackle. 小橱里塞满了旧的钓鱼用具。
Clearly, the decline in fish populations in Tria's waters is the result of overfishing, not pollution. 显然，Tria水域鱼类数量的下降是过度捕鱼而不是污染造成的。
This city has a population of more than 1,000,000. 这个城市人口超过一百万。
Currently many fish populations in Tria's waters are declining, a situation blamed on pollution. 当前Tria水域的很多种鱼类数量都在下降，这种现象被认为是污染造成的。
The motor launch was fitting out as a fishing boat. 这艘摩托艇正在装备成渔船。
A desert has no settled population. 沙漠没有固定的居民。
My fishing line got entangled in some weeds. 我的钓鱼线同杂草纠缠在一起。