| 1. | They may endure as varieties for very long periods .
在极长时期内停留在变种阶段。 |
| 2. | Can this vast horror be long concealed ?
这个恐怖万分的事件能够长时期被掩盖起来吗？ |
| 3. | " modern " can refer to a longer period up to the present .
“modern”可指直至当前的一段较长时期。 |
| 4. | We went to every length to deny him any possible access to this information .
我们长时期阻碍他得到此种消息的任何可能性。 |
| 5. | The sensory system may also undergo long-term adaptation in alien environments .
感觉系统对陌生的环境可能经过长时期才能适应。 |
| 6. | He had been mayor so long that he was the idea-mayor in the town .
他当了那么长时期的市长，在这座城镇里，他就代表了市长这个概念。 |
| 7. | Under good leaders it will be maintained among troops even during extended periods of adversity .
在一良好的领袖领导之下，部队在长时期的艰苦中，亦能维持士气。 |
| 8. | Secular trend is the value of the variable that tends to increase or decrease over a long period of time .
长期趋势指的是在一个长时期内趋向增加或减少的变量的值。 |
| 9. | It is well known that displaced workers sustain prolonged income losses while trying to find new jobs .
众所周知，被解雇的工人在试图找到新的职业的同时他们的收入会遭受长时期的损失。 |
| 10. | Nevertheless, low and simple forms will long endure if well fitted for their simple conditions of life .
不过，低等的、简单的生物，如果和它们的简单的生活条件密切适合，却也可以在长时期内保持不变。 |
