我要勤奋工作，赚多一点钱。

Wǒ yào qínfèn gōngzuò, zhuàn duō yìdiǎn qián.

I want to work hard and earn a bit more money.

他勤奋好学。

Tā qínfèn hàoxué.

He is diligent and eager to learn.

勤奋是成功的关键。

Qínfèn shì chénggōng de guānjiàn.

Diligence is the key to success.