这个标准每几年发布一次更新版本。

Newly updated versions of the standard are published every few years.

youdao

相关事故虽然算不上频发，但是每几年就会发生一次。

Accidents are not frequent, but happen every few years.

youdao

各国每几年递交工作进展，这样可以让各国有你追我赶的紧迫感。

Then make countries report their progress every few years and get countries to take competitive pride in their progress.

youdao

That means that a group of people who were identified and then re-measured every other year on -to getting blood tests and other biological markers, as well as doing assessments of their lifestyle behaviors and a number of other things.

就是说有一群特定的人,然后每隔几年,就要接受血液及其他生物学测试,还要对他们的生活方式等进行评估

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选