全部

1·Such forage fish already account for nearly a fifth of the world's total annual catch;

这样的饲料鱼已经差不多占每年世界总捕鱼量的五分之一；

2·Such forage fish already account for nearly a fifth of the world’s total annual catch; another fifth goes to feed pigs and poultry.

这样的饲料鱼已经差不多占每年世界总捕鱼量的五分之一；另有五分之一被用于喂猪和家禽。

3·After rapidly warming, a sea once swimming with fatty forage fish like herring and capelin eventually became dominated by pollock, Atka mackerel and flatfish.

海洋中曾经游弋着大量脂肪含量高的草食鱼类，如青鱼、毛鳞鱼，而在全球急剧变暖的效应之后，海洋成了鳕鱼，远东多线鱼和比目鱼的地盘。

4·Because the cave fish may not need less sleep-they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.

因为穴居鱼可能并不需要睡得更少——它们可能需要保持清醒，以便更经常地在食物短缺和食物不常出现的环境中觅食。

5·Because the cave fish may not need less sleep-they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.

因为洞穴鱼可能并不需要更少的睡眠——它们需要保持清醒，搜寻更多的食物，毕竟洞穴中食物不仅量少而且难以寻找。

6·She teaches them to fish, forage, hunt, and defend themselves.

她教他们捕鱼，搜寻粮草，追捕，和防卫它们自己。

7·Very small northern fish; forage for sea birds and Marine mammals and other fishes.

北部非常小的鱼；海鸟、海生哺乳动物和其它鱼类的食物。

8·It can grow well in heavy saline and pool land. It is an ideal crop that can not only improve saline-alkaline soil, but also be used as forage for animals and fish.

在重盐碱地经过冲洗、肥力很低，一般作物不能生长的条件下生长较好，可作为改良盐碱地和中低产田的先锋作物。