这里鱼类养殖场的条件出乎意料地干净。

The conditions on the fish farms are surprisingly clean.

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苏巴辛格认为，满足未来鱼品需求的唯一选择是开展鱼类养殖。

The only option for meeting future demand for fish, Subasinghe argues, is by farming them.

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有些鱼类就是不适合人工养殖。

Some fish are simply not suited to it.

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水产养殖业现在提供全世界几乎一般的食用鱼类。

The aquaculture industry now provides almost half of the fish eaten worldwide.

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现在也有一些鱼苗孵化场可以人工养殖鱼类。

Now are also hatcheries in which fish are farmed.

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在稻田中养殖鱼类会大大提高大米的产量。

The fish culture in paddy field may markedly increase rice production.

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然而，养殖的鱼类更容易获得，往往成本较低。

However, farm-raised fish are more readily available and often cost less.

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然而，养殖的鱼类更容易获得，往往成本较低。

However, farm-raised fish are more readily available and often cost less.

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