few and far between

基本解释

If you wait for inspiration to slap you in the face, your work sessions will be few and far between.
如果你等着灵感在你的脸上扇一巴掌，你的工作进展将稀少而漫长。
That didn’t matter so much 20 years ago when personal computers were few and far between , but times have changed.
20年前个人计算机还相当稀少的时候，这件事并没有那么重要，但是时代不同了。
edu.sina.com.cn
But it also has ambitious nuclear power targets and its quest for uranium – repositories of which are few and far between – has thrown the rivalry into sharper focus.
但它同时还有着雄心勃勃的核实力目标，中国对储量稀少的铀资源的追逐，让人们更为关注上述竞争。

The bad news is that life is messy, and neat experiments few and far between.
FORBES: What Did You Know, and When Did You Stop Knowing It?
Wildlife cops are few and far between, and the bad guys operate deep underground.
NPR: Poaching Sheds Light on Market for Eagle Parts
My own encounters with the Prince were few and far between, but nonetheless memorable.
FORBES: Close Encounters Of The Royal Kind: Going To College With Prince William