Many scientists say this figure is too high and allows fishermen to land two or even three fins for every shark carcass they land.
许多科学家说这一数字过高，使渔民能在每条捕捞到的鲨鱼身上割下两个甚至三个鱼翅。
These methods have enabled French farmers, for example, to get five times as much wheat as was obtained from the same land two centuries ago.
这些方法使法国农民在同 一块土地上收获的小麦是两个世纪前的5倍。
These methods have enabled French farmers, for example, to get five times as much wheat as was obtained from the same land two centuries ago.
这些方法使法国农民在同 一块土地上收获的小麦是两个世纪前的5倍。
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