1·Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact.
即使新的种群属于不同物种，它也可以大致填补已灭绝种群空出的生态位，保持食物网的完整。
2·I try to show them it's in their best interest to keep the environment intact.
我试着向他们说明保持环境完整是为了他们的最佳利益。
3·As much as I wish his dad and I could have given him an intact family, we couldn't.
尽管我是多么希望我和他爸爸能给他一个完整的家，可是我们做不到。
4·The big question is whether they remain mentally alert because they engage in these activities, or whether they are able to engage in these activities because they are cognitively intact.
重要的问题在于，他们是否因为参加这类活动而保持了头脑的灵活，或是正因为他们拥有完整的认知能力，所以才有能力参与这类活动。
5·To preserve the farm intact, he transferred it to one heir.
为了保持这个农场的完整，他将它移交给一个继承人。