苯环 běnhuán benzene ring Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 苯环上的氢原子可以发生取代反应。 běnhuán shàng de qīngyuánzǐ kěyǐ fāshēng qǔdài fǎnyìng. Hydrogen atoms on the benzene ring can undergo substitution reactions. Source: Dong Chinese Dictionary