刚刚够就是还不够。

Having just enough just isn't enough. I love my iPhone.

youdao

我的牛奶刚刚够喝咖啡用的。

I've got enough milk for the coffee - but only just.

youdao

他举起胳膊，刚刚够到高度。

By stretching up his arm he could just reach.

youdao

An insurance company has reserves and it has enough reserves to cover them for a certain number of accidents.

保险公司一般都有准备金,准备金的数量一般保持在,刚刚够赔偿一定数量的保单

耶鲁公开课 - 金融市场课程节选