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

　　你已經(jīng)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(huán)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(shí)，小的手提式暗箱已經(jīng)很普通了。

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

　　這列火車(chē)由16節車(chē)廂組成，設計復雜精巧。