Meaning of yōu:
yōu
呦
Interjection
Oh! (exclamation of dismay etc)
Yōu, nǐ gānggāng cǎi zài wǒ de jiǎo shàng le!
呦，你刚刚踩在我的脚上了！
Oh, you just stepped on my foot!
Onomatopoeia
used in 呦呦[you1you1]
Xiǎo lù zài cǎodì shàng yōuyōu de jiàozhe.
小鹿在草地上呦呦地叫着。
The little deer was making a bleating sound on the grass.
