来由

zhè xiē huà dí què shì yǒu lái yóu de

这些话的确是有来由的。

These remarks are certainly with some reasons.

tā jiǎng le tā xué zhēn jiǔ de lái yóu

她讲了她学针灸的来由。

She explained how she came to study acupuncture.

nòng qīng chu lái yóu

弄清楚来由

find out the reason

tā shuō zhè xiē huà bù shì méi yǒu lái yóu de

他说这些话不是没有来由的。

He didn't make the remarks without reason.

tā méi lái yóu de dǎ wǒ bǎ wǒ xiàng nú lì yī yàng shǐ huan

他没来由地打我，把我像奴隶一样使唤。

He beat me for no reason and treated me like a slave.

bǎ nǐ rú cǐ zuò de lái yóu gào zhī wǒ

把你如此做的来由告知我。

Tell me the reason why you did it.