x-rated math中文什么意思

Math books whose sexy titles subliminally conjure up images more apt for an adult movie.

> Since he stepped down as an adjunct professor, Dr. Davis is planning to write a series of x-rated math books for a mature audience: &quo+更多解释...t;Math Needn't Be a Four Letter Word," "Intimacy with Sexy Curves," and "Vital Statistics for Bitches & Jerks."

• x-rated:    adj. 1.〔美国〕(电影限制范围 ...
• x-rated movie x:    级影片；成人电影；春宫片
• x rated movie:    儿童不宜片