50公斤重的大马哈鱼王曾经奋力爬上瀑布，把卵产在砾石床上，现在只有混凝土墙挡住静止的水和深深的泥床。
Where 50-kilogram king salmon once fought their way up waterfalls to lay their eggs in gravel beds, there now are only concrete walls holding back still water and deep beds of muddy deposits.
人们普遍认为鱼的记忆只有七秒。
It's a common belief that fish can't remember anything for longer than seven seconds.
在1984年至1993年期间，他曾试图拯救四条鱼，但只有一条活了下来，并返回河中。
Between 1984 and 1993, he once tried to save four fish, but only one stayed alive and returned to the river.
而水产养殖只有在环境条件，经济条件和鱼的种类适合人工养殖的情况下才能成功。
Aquaculture will only work, environmentally and economically, with the right sort of fish.
一项研究报告说在附近的East Meria，鱼的消费量很高，那里的人们每年因为治感冒而去看医生的次数只有一或两次。
A study reports that in nearby East Meria, where fish consumption is very high, people visit the doctor only once or twice per year for the treatment of colds.
我熏制的鳟鱼和鲑鱼等所有的鱼都是人工饲养的，只有鳗鱼是野生的。
All the fish I smoke, trout and salmon, are farm raised, except the eels. The eels are wild.
1900年的时候海上只有一艘船，而海里有许许多多鱼儿在自由地遨游；相反，到了1995年，海上有许多渔船，它们都在努力寻找海里仅剩的一条鱼。
There were few fishing ships on the sea in 1900 when an enormous number of fish swam freely; in contrast, in 1995 a large fleet of ships were endeavoring to search for the only fish in the sea.
还有好的习惯：这位55岁的女演员坚持着一份几乎只有鱼和蔬菜的食谱，并且一周五天做瑜伽，尽管这位自我宣称是享乐主义者的女演员承认自己的弱点就是酒。
And good habits: the 55-year-old sticks to a diet of mostly fish and vegetables and does yoga five days a week, though the self-proclaimed hedonist admits a weakness for good wine.
报告显示，1980年人类鱼品消费量中只有9%来自水产养殖，而如今这一数字为43%。
While in 1980 just 9 percent of the fish consumed by human beings came from aquaculture, today 43 percent does, the report shows.
四眼鱼实际上并没有四个眼睛——只有普通的两个。
Anableps doesn't actually have four eyes-just the usual two.
那些有幸全身而退或者受伤不重的人却发现用性命换回来的鱼却买不上价钱，原因只有一个：市场泛滥了。
Those that were lucky enough to make it home alive, or without serious injury, found that the price of halibut had collapsed because the market was flooded.
吃鸡蛋，鱼和冷肉作为早餐，保持蛋白质食物作为午餐，比如只有鱼和黑绿色蔬菜。
Have eggs, fish or cold meat at breakfast. Stick to protein-based foods at lunchtime such as oily fish with dark green vegetables.
我们只有鱼罐头。
一只有毒的狮子鱼闯进了一大群游在一起的小鱼中间。
A venomous lionfish breaks into a huge ball of swirling baitfish.
当一只食蚊鱼发现只有它自己时，当务之急就是找到其它的伙伴。
When a mosquitofish finds itself alone, its top priority becomes finding others.
乌鸦开始害怕起来，它只有更加用力地拉拽，企图能挣脱鱼线，可是却无济于事。
Frightened, Raven pulled hard on the line, but still he could not break free.
趁着这个间隙，海豚会丢掉嘴中的海绵，浮出海面换气，接着马上潜入水里捕捉这些长度只有12cm的底栖鱼。
That interlude gives the dolphin just enough time to drop its sponge, surface to get a breath, and dive again to snag the fish, most of which are about 12 centimeters in length.
澳大利亚全国人口虽然只有2000万，但它却拥有400万只狗、250万只猫、870万只宠物鸟和超过1200万只宠物鱼。
Australia is a nation of 20 million people, almost 4 million dogs, 2.5 million cats, 8.7 million pet birds and more than 12 million pet fish.
富含天然维生素d的食品只有含油较多的鱼，例如三文鱼和鲭鱼、蛋黄、动物肝脏和鱼肝油。
The only naturally rich dietary sources are oily fish from the sea like salmon and mackerel, egg yolks, liver and fish liver oil.
最后活下来的鱼只有国王，他活了3年！
世界上可能剩下捕的鱼只有是水母和当诱饵用的小鱼类。
The world could be left to fish nothing but jellyfish and bait.
星期六在大坝的地基处，官员们数出只有72条三文鱼，他们不能进一步逆流往上游。
On Saturday at the base of the dam, officials counted only 72 salmon, unable to swim any farther upstream.
但在消防煤有似乎已只有一个鱼，和旁边只有一个面包。
But on the fire the coals there seems to have been only one fish, and beside it only one bread.
这场筵席是简单的，只有饼和鱼；但是食物却越来越多能够满足筵席的所有主人。
The food was meagre, just bread and fish; but it was multiplied to satisfy a host of people.
这场筵席是简单的，只有饼和鱼；但是食物却越来越多能够满足筵席的所有主人。
The food was meagre, just bread and fish; but it was multiplied to satisfy a host of people.
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