摘要：He left at three, which was just as well or he'd have missed the plane. （他三点钟离开了，这恰恰好，否则他会错过飞机的。）[剑桥高级学者辞典]

just as well是常用短语，如

【例句1】It's just as well I kept some money aside for emergencies. （幸好我存了一些钱以备不时之需。）[朗文当代英语词典]

【例句2】It's just as well you're not here - you wouldn't like the noise. （幸好你不在这里——你不喜欢这里的噪音）[剑桥高级学者辞典]

【例句3】He left at three, which was just as well or he'd have missed the plane. （他三点钟离开了，这恰恰好，否则他会错过飞机的。）[剑桥高级学者辞典]

【例句4】It's beginning to rain - it's just as well that we brought our umbrellas. （天开始下雨了，幸好我们带了雨伞。）[剑桥高级学者辞典]

【例句5】Judging from everything you've said, it was just as well she wasn't there.（从你说的一切来看，幸好她不在那里。） [柯林斯高级学者辞典]

just as有no less than, equally之义。just as well的well有满意之义。

just as well有“恰恰好，刚刚好，幸好”之义。

来源：奇妙教育