刚刚好的英文是：just right; just enough
He's just the right man for the job.
他担任这个工作倒很合宜。
This board is just the right size.
这块木板尺寸正好。
People who have an idea for a site they want to build and learn just enough technology to build it.
有点子建构网站，而且只想学习刚刚好足够多的技术。
For example, if you're getting just enough food, eating will be fun for you at every meal.
如果你吃得刚刚好，那么每次吃饭对你来说都是一件乐趣；
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