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1·It will also be necessary to understand what sort of yield farmers might expect and to establish the plant's safety.

了解农民可能期望获得怎样的产量以及确定植物的安全性也将是必要的。

2·It may be necessary to buy a new one.

也许有必要买个新的了。《牛津词典》

3·It may also be necessary to get a new appraisal of the property.

可能还需要对该房产做个新的估价。《柯林斯英汉双解大词典》

4·I kept the engine running because it might be necessary to leave fast.

我让发动机一直开着，因为可能需要快速离开。《柯林斯英汉双解大词典》

5·It might be necessary to make a few slight modifications to the design.

也许有必要对这个设计稍作几处修改。《牛津词典》

6·It might also be necessary to supply an abstract of the review of the literature as well.

可能也有必要提供这篇文学评论的摘要。《柯林斯英汉双解大词典》

7·To show the respect, it may be necessary to explain what the gift is.

为了表示尊重，人们可能需要解释礼物是什么。

8·Elliott also said that in order to translate what the aliens are actually saying, it may still be necessary to have a code book.

艾略特还说，为了翻译外星人所说的，可能仍然需要一本密码本。

9·At least three years' study would be necessary to achieve the literacy competence necessary to grapple with the material she analyzes.

要掌握她所分析的材料所需的读写能力，至少需要三年的学习时间。

10·Now a third and far more significant motivation presents itself: meeting these goals may be necessary to prevent the collapse of our civilization.

现在，第三个也是更重要的动机出现了：为了防止我们文明的崩溃，这些目标可能是必须要实现的。