Nchs
[医][=National Center for Health Statistics]全国卫生统计中心，全国健康状况统计中心
🗣️ 情景例句
but this is an important opportunity.
但这是一次很重要的机会。
If he doesn't help him, I will.
如果他不，我将帮助他。
Easy come easy go.
来得容易，去得快。