且不说

qiě bù shuō xiào hua nǐ yīng gāi jiè yān

且不说笑话，你应该戒烟。

Joking apart, you ought to give up smoking.

qiě bù shuō fèi yòng duō shǎo wǒ men hái xū yào yī liàng qì chē

且不说费用多少，我们还需要一辆汽车。

Leaving the expense aside, we actually need a second car.

qiě bù shuō zhōng wén qī kān wài wén qī kān yě dìng le bù shǎo

且不说中文期刊，外文期刊也订了不少。

Lots of periodicals in foreign languages have been subscribed to, not to mention those in Chinese.