1.需要的,必要的,不可缺少的 (to; for)
2.〈古〉穷困的
1.〈俚〉(必需的)钱,现金;必需的事物
1.necessary, or essential
1.She had been thinking the matter over, and she thought an apology distinctly needful.
她曾反复思考此事，认为道歉显然是需要的。
2.Whenever the joy of that day comes back to me, even now, I realise why rhyme is so needful in poetry.
直至今天，那些日子的欢乐图景还铭刻在我心上。我明白了，为什么韵律对于诗歌来讲是那么的必要。
3.But a love affair imparts adventure, and adventure is as needful to the soul as food is to the body.
但是这种风花雪月给了人们一种刺激感，我们内心深处对冒险的渴求就好像我们身体对食物的需要一样。
4.He could only think of how needful it was to make the train and get quietly away.
他一心只想着，最重要的是赶上火车，悄悄离开。
5.Since the majority of scheduling problems, particularly the practical ones, are NP-hard, approximation algorithms are needful to solve them.
由于大部分排序问题，特别是有实际价值的问题是NP困难的，因此在实践中往往需要使用近似算法。
6.Exercise, temperance, fresh air, and needful rest are the best of all physicians .
锻炼、节制、新鲜空气和必要的休息是最好的医生。
7.A man's work is rather the needful supplement to himself than the outcome of it.
一个人的工作更多地是他自身的必要补充，而非这种补充的结果。
8.What's more, the character and age of people are different; the needful friends are also different.
每一个人的性格，年龄，性别不同，需要的朋友也就不一样。
9.The bionic porous metal material needful can be fabricated by dint of controlling the laser technics parameters.
借助于激光工艺参数的控制，可制备出所需性能的多孔金属仿生材料。
10.For now I need you to do the needful as I urgently wait your corresponding email thank you.
现在我需要你合作，因为我正急切的等待你的回应。谢谢。