证书

我需要证书来证明我已经完成了这个课程。

Wǒ xūyào zhèngshū lái zhèngmíng wǒ yǐjīng wánchéng le zhège kēcháo.

I need a certificate to prove that I have completed this course.

他有一个证书证明他在建筑领域有丰富的经验。

Tā yǒu yí gè zhèngshū zhēnming tā zài jiànzhù lǐnyè yǒu fēngfù de jīngyáng.

He holds a certification showing his extensive experience in construction.