sāng / ná / tiān / zuì / hǎo / dāi / zài / kōng / tiáo / fáng / lǐ / bú / yào / cháng / shí / jiān / zài / hù / wài / huó / dòng

桑拿天最好待在空调房里，不要长时间在户外活动。

It is best to stay in an air-conditioned room on sultry days and avoid staying outdoors for long periods.