红色：没有听出或有问题 蓝色：拼写存在问题
In the wild,salmon,tuna or other active migrating fish get a lot of exercise.When these fish are raised in captivity,without predators or the need to fight their way upstream against the current.they turn into fish couch-potatoes.And not unlike sedentary humans,lethargic fish are more prone to getting sick.As many as 20 percent of farmed salmon dying captivity,apparently because their simply out of shape. A new technical book called Swimming physiology of fish presents scientific research on how various train routines,water turbulence,diet and even the use of robotic fish as swim trainers can keep active fish conditioned.This "fishical" fitness research has shown that when captive salmon exercise regularly they grow bigger have stronger hearts and immune system and are healthier than their sedentary brethren. For an example,a Norwegian study found that when salmon had to swim against an artificial current they were much less likely to a common fish virus than their buddies and still water.The bottom line?Healthier profits for fish farmers and healthier fish on your dinner table.
生词：
1)salmon n.鲑鱼；大马哈鱼；鲑肉色
2)tuna n.金枪鱼，鲔鱼
3)migrating v. 迁移；迁徙；移居（migrate的ing形式）
4)captivity n. 囚禁；被关
5)predators n. [动] 捕食者；[动] 食肉动物；掠夺者
6)upstream adv.逆流地；向上游
7)couch potatoes 沙发土豆
8)sedentary adj. 久坐的；坐惯的；定栖的；静坐的
9)lethargic adj. 昏睡的；无生气的；泠漠的
10)prone adj.俯卧的；有…倾向的，易于…的
11)physiology n. 生理学；生理机能
12)turbulence n. 骚乱，动荡；[流] 湍流；狂暴
13)robotic adj.机器人的，像机器人的；自动的
14)conditioned adj. 有条件的，受制约的；习惯于…的
15)brethren n. 弟兄们；同胞
16)Norwegian adj. 挪威的；挪威人的；挪威语的
17)still water 静水