Fortunately, it does not happen often, but you have to watch for it.

幸运的是，它不经常发生，但你得小心了。

youdao

You may straight away become aware of your third eye, but that does not happen often.

你或许可以即刻感知第三眼，但这样的事目前还未发生过。

youdao

When Jupiter does this - and it does not happen often - it becomes headline news in astrological circles.

当木星这样的时候，这将会是占星圈里头条新闻，这并不常常发生。

youdao

"Something else, which we hope does not happen very often, but which happens from time to time are the accidents which can release huge amounts of chemicals or radioactive-during Chernobyl, the radioactive things.

VOA: standard.2009.03.23

Caveat emptor, making money in the markets this easily does not happen often.

FORBES: Dish To Battle Sprint For Clearwire's Pot Of Gold

The book correctly identifies some of the reasons why this does not happen in poor countries, where companies often fail to understand their customers and lack knowledge of their relative position in an industry.

ECONOMIST: Fish out of water

"When people die, donation of their organs and tissues is often possible but currently does not happen - not because they did not wish to donate but because they never got round to joining the organ donor register, " she said.

BBC: Welsh government's 'opt out' organ donor consultation