n.苯并芘...

A large number of hydrocarbons such as benzopyrene are also mutagenic.大量碳氢化合物如苯并芘也是诱变剂....

benzopyrene的音标：benzopyrene的英式发音音标为：['benzəpaɪri:n]benzopyrene的美式发音音标为：['benzəpaɪrin]...