一句

他说的没有一句实话。

tā shuō de méi yǒu yī jù shí huà。

There isn't a grain of truth in what he says.

顺便问一句，你今晚有空吗？

shùn biàn wèn yī jù， nǐ jīn wǎn yǒu kòng ma？

By the way, are you free tonight?

“滚石不生苔”是一句谚语。

“ Gǔn shí bù shēng tái ” shì yī jù yàn yǔ。

"A rolling stone gathers no moss" is a proverb.