因为阳光会逐渐减弱防晒霜的效果，如果你打算在直射的阳光下多待一段时间，每一两个小时重新涂一下防晒霜。

Because sun breaks down its effectiveness over time, if you're going to be in direct sunlight for an extended period, reapply every hour or two.

youdao

这仅相当于痰涂阳性耐多药结核病例全球估计总数的8.5%。

This was 8.5% of the estimated global total of smear-positive cases of MDR-TB.

youdao

这相当于痰涂阳性的耐多药结核病例全球估计总数的1%。

This is equivalent to 1% of the estimated global total of smear-positive cases of MDR-TB.

youdao