And these algae would soon take over and destroy the reef if they were not being eaten by fish.

而且这些海藻如果不被鱼吃掉，它们将迅速生长并破坏珊瑚礁。

youdao

There are a lot of reasons all people are encouraged to eat fish at least twice a week, not the least being that it's low in fat and calories.

每周至少要食用两次鱼，这是理论有很多依据的，不仅仅是因为鱼类含有较少的脂肪和卡路里。

youdao

Another contentious issue being debated is what will happen if these salmon escape from fish farms into the wild. AquaBounty says not to worry.

另一个引起争论的问题是，假如这些鲑鱼从养鱼场逃到野外会产生什么影响。（美国）“水恩惠”公司则说这个问题无需多虑。

youdao

Despite not being in the European Union, the island signed up to the EU fish quota system as part of an agreement with the UK over managing local fish stocks.

BBC: Jersey States discussing local fish quotas