讷: 形容词[书面语] (说话迟钝) slow (of speech) 短语和例子讷于言而敏于行 slow of speech but quick in action
兴: 兴名词(兴致; 兴趣) mood or desire to do sth.; interest; excitement 短语和例子尽兴 enjoy oneself to the full; 酒兴 excitement due to drinking; 诗兴 an exalted, poetic mood; 雅兴 aesthetic mood; 游兴 the mood for