1·Why the number of teetotaling 18-year-olds is up isn't clear.
导致超过18岁而滴酒不沾的年轻人数量增加的原因尚不明确。
2·During Prohibition, teetotaling temperance activists asserted this belief, citing it among the dangers of drink.
在禁酒期间，绝对的禁酒主义的活动家们更是坚信着这种信念，大肆地宣扬喝酒的危害。