1. adequate for足够的，合乎需要的；适合的
The space available is not adequate for our needs.
现有的空间不能满足我们的需要。
However, a pocket dictionary doesn't contain enough entries to be adequate for college reference homework.
然而袖珍字典的词条量较少，满足不了大学作业参考的需要。
His knowledge of French was adequate for the job.
他的法语知识对于这项工作是足够用的了。
They had money adequate for the cost of the journey.
他们的钱足够这次旅行的费用。
The western diet should be perfectly adequate for most people.
西方的日常饮食应该完全适合于大多数人。
2. adequate to（to是介词）恰当的，称职的，令人满意的
We found a solution adequate to the problem.
我们找到了解决这个问题的适当方法。
I hope you will prove adequate to the job.
我希望你将胜任这项工作。
Though a bit too old, he is still adequate to the work.
虽然他年纪大了点，却仍能胜任这项工作。
另外：
be adequate to do 足够做某事
His wages are adequate to support three people.
他的工资够养活三口人。
The old methods weren't adequate to meet current needs
老一套方法已不足以满足当前的需要。
Fifty dollars is barely adequate to pay for breakfast in a Moscow hotel.
50美元勉强能够应付在一家莫斯科旅馆的早餐开销。
The supply is not adequate to meet the demand.
供不应求。