HSK 4 · noun
证
certificate; permit; proof (证)
进机场要拿出证件。
Jìn jīchǎng yào náchū zhèngjiàn.
You need to show your papers when entering the airport.
我保证明天完成作业。
Wǒ bǎozhèng míngtiān wánchéng zuòyè.
I promise to finish the homework tomorrow.
他去外国前要办签证。
Tā qù wàiguó qián yào bàn qiānzhèng.
He needs to get a visa before going abroad.
坐火车要带身份证。
Zuò huǒchē yào dài shēnfènzhèng.
Bring your ID card when taking the train.