6．In order to protect the wildlife from extinction，it is necessary to set up wildlife reserve.

5．They attack the wild animals to death，which has endangered the wildlife.

4．On the other hand，people can not get along well with the wildlife which they think are fierce.

3．On one hand，people hunt animals for food or for the thick furs.

2．At present they are in danger of dying out.

7．只要人类让野生动物安详地生活，它们就会成为我们的朋友。(in peace)

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答案：[句子翻译]　1.It is important to protect wildlife.

6．为了保护它们不至于灭绝，建立野生动物保护区很有必要。(extinction，set up)

5．人们常常置它们于死地，使得野生动物面临危险。(endanger)

4．另一方面，人们不能与一些他们认为很凶猛的动物很好相处。(on the other hand，fierce)

3．一方面，为了获取食物或动物身上厚厚的皮，人们捕猎动物。(on one hand，hunt，fur)