1. If necessary I can come at once.
如果有必要,我可以马上来。

《牛津词典》

2. I can take the car if necessary.
如果必要的话,我可以乘汽车去。

《牛津词典》

3. Sometimes it is necessary to say no.
有时候说“不”是必要的。

《柯林斯英汉双解大词典》

4. Military action may become necessary.
军事行动可能会成为必要。

《柯林斯英汉双解大词典》

5. I'll make the necessary arrangements.
我会做一些必要的安排。

《牛津词典》

6. Higher taxes may be a necessary evil.
提高税率虽不是件令人愉快的事,但可能是必要的。

《柯林斯英汉双解大词典》

7. It doesn't seem necessary for us to meet.
我们似乎没必要见面。

《牛津词典》

8. If necessary , you can contact me at home.
必要的话,我在家时你也可以和我联系。

《牛津词典》

9. They would take any action deemed necessary.
他们会采取认为必要的任何行动。

《牛津词典》

10. This is a necessary consequence of progress.
这是发展的必然后果。

《牛津词典》

11. Some adjustment of the lens may be necessary.
可能需要调整一下镜头。

《牛津词典》

12. Repairs are necessary to strengthen the bridge.
这座桥需要加固。

《牛津词典》

13. For him, reading was a necessary prelude to sleep.
对他来说,阅读是入睡的必要前奏。

《柯林斯英汉双解大词典》

14. The alliance stands ready to do what is necessary.
该联盟已准备好采取必要行动。

《柯林斯英汉双解大词典》

15. A radical overhaul of the tax system is necessary.
有必要彻底改革税制。

《牛津词典》

16. For her, books were as necessary to life as bread.
对她来说,书就像面包一样是生活的必需。

《柯林斯英汉双解大词典》

17. She searched her desk for the necessary information.
她在她的书桌里搜寻必要的资料。

《柯林斯英汉双解大词典》

18. "We will take the necessary steps," she said sternly.
“我们将采取必要措施,”她严厉地说道。

《柯林斯英汉双解大词典》

19. It has been found necessary to make some cuts in the text.
已发现有必要对文章作些删节。

《柯林斯英汉双解大词典》

20. A clearly quantifiable measure of quality is not necessary.
一种确切的可计量的质量检测是不必要的。

《柯林斯英汉双解大词典》

21. I do not wish to complicate the task more than is necessary.
我不想使这项任务不必要地复杂化。

《牛津词典》

22. This was a dreadful crime and a severe sentence is necessary.
这是一种骇人听闻的罪行,重判是必要的。

《柯林斯英汉双解大词典》

23. It is not always necessary to gut the fish prior to freezing.
在冷冻鱼之前没有必要总是取出其内脏。

《柯林斯英汉双解大词典》

24. We will use air power to protect UN peacekeepers if necessary.
必要时我们会动用空军力量来保护联合国维和部队的安全。

《柯林斯英汉双解大词典》

25. They've been deprived of the fuel necessary to heat their homes.
他们无法得到住房取暖必需的燃料。

《柯林斯英汉双解大词典》

26. His level-headed approach suggests he will do what is necessary.
他的冷静态度表明他会采取必要的行动。

《柯林斯英汉双解大词典》

27. It is, however, necessary on occasion to work outwith these hours.
然而,有时有必要在这些时间之外工作。

《柯林斯英汉双解大词典》

28. Reorganization is necessary on the distributive side of this industry.
此行业的产品分配环节必需重组。

《柯林斯英汉双解大词典》

29. It is necessary initially to classify the headaches into certain types.
起初把头疼分成若干类别是有必要的。

《柯林斯英汉双解大词典》

30. We are still looking for someone who combines all the necessary qualities.
我们仍在寻觅兼备所有必要才能的人选。

《牛津词典》