Practicing a piece of music for four hours requires focused attention, but it is nowhere near as cognitively demanding as a sleepover with 14-year-oldgirls.
练习一段音乐4个小时需要集中注意力，但它远不及一个在外过夜的14岁女孩对认知的要求。
2
Twilight fans are thirteen year oldgirls.
《暮光之城》的粉丝都是十三岁的小女孩。
3
Among them, figure the 13-year-old and 10-year-oldgirls announced previously.