1、You shouldn't be so childish; you're sixteen now!

　　你已經十六啦，別這么孩子氣！

　　2、A very interesting one appears in Chapter sixteen where the cyclomemory is  described.

　　特別有意義的是16章所介紹的`循環存貯器。

　　3、When boys get to the age of fifteen or sixteen they eat their heads off.

　　男孩子到了十五六歲的年齡，食量大得嚇人。

　　4、By the later part of the sixteen hundreds, small hand-held camera  OBSCURAS were  commonplace.

　　到17世紀后半葉時，小的手提式暗箱已經很普通了。

　　5、The train was an elaborate affair of sixteen coaches.

　　這列火車由16節車廂組成，設計復雜精巧。