| 1. | Aquatic food chains are different from terrestrial ones .
水生食物链不同于陆地食物链。 |
| 2. | Chemical degradation is very slow so that it becomes more concentrated in successive stages of the food chain .
化学的递降分解作用十分缓慢，以致它在食物链连续各阶段中变得更为浓缩。 |
| 3. | Chemical degradation is very slow so that it becomes more concentrated in successive stages of the food chain .
化学的递降分解作用十分缓慢，以致它在食物链的连续各阶段中变得更为浓缩。 |
| 4. | Because perrinia immortalis is part of the food chain
因为不朽之花进入了食物链 |
| 5. | Later on we were kind of moved down the food chain . .
后来，我们水平有所下降… … |
| 6. | Producer the first trophic level , in a food chain
生产者：食物链中第一个营养级。 |
| 7. | Layla ' s gonna take us right up the food chain
我们可以通过莱拉，找到食物链的最上层 |
| 8. | You might say i been working my way up the food chain
你可以说我是顺藤摸瓜 |
| 9. | Later on we were kind of moved down the food chain
后来，我们水平有所下降 |
| 10. | You might say i ' ve been working my way up the food chain
你也许会说我做的方式很象食物链 |
