会议开了三个小时却没有任何结论,大家都觉得特别没劲。Huìyì kāi le sān ge xiǎoshí què méiyǒu rènhé jiélùn, dàjiā dōu juéde tèbié méijìn.The meeting lasted three hours but reached no conclusion, so everyone found it especially pointless.
一个人在家看电视真没劲,我们出去走走吧。Yí ge rén zài jiā kàn diànshì zhēn méijìn, wǒmen chūqù zǒuzou ba.Watching TV alone at home is really boring; let's go out for a walk.
昨晚没睡好,今天做什么都没劲。Zuówǎn méi shuì hǎo, jīntiān zuò shénme dōu méijìn.I did not sleep well last night, so I have no energy for anything today.