He hopes he can speak fluent Mandarin by then.

届时，他希望，自己能够说一口流利的普通话。

youdao

Although % he is from the USA, he can speak fluent Mandarin.

尽管他是美国人，他却能说一口流利的普通话。

youdao

I can speak fluent Mandarin and Cantonese as well as some English.

我能说流利的普通话和广东话，也能说一些英语。

youdao

Horrocks earned his PhD in Chinese Economic History from Leeds University in the United Kingdom, and is fluent in Mandarin.

FORBES: Connect

It also highlights a next step for Apple's retail strategy: Jung, who is fluent in Mandarin, made Avon a force in China.

FORBES: Magazine Article

Edward Theodore Chalmers Werner was a formidable figure in the Peking community, a genuine China hand who was fluent in Mandarin, courageous and very curious.

ECONOMIST: Crime in the shadow of the Great Wall