Wear a broad spectrum sunscreen, even in the winter, anywhere skin is open to the elements.
在皮肤暴露在外的环境下都要涂抹全效防晒霜，即使是冬天也一样。
The analysis of trace chemical elements shows that Mu Us Desert has been repeatedly subjected to the alternating East Asian winter and summer monsoon during Holocene.
微量化学元素分析结果表明全新世期间毛乌素沙漠多次受到东亚冬、夏季风的交替控制。
The content of metal elements in particles are higher in residents-commercial -transportation mixed district than that in administrative-education district, and are higher in winter than in fall.
颗粒物中金属元素含量商业交通居民混合区大于行政文教区，冬季浓度大于秋季。
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