癌症

我有癌症。

Wǒ yǒu ái zhèng.

I have cancer.

我弟弟去年死於癌症。

Wǒ dì di qù nián sǐ wū ái zhèng.

My brother died of cancer last year.

科学家们还不知道怎么治疗癌症。

Kē xué jiā men hái bù zhī dào zěn me zhì liáo ái zhèng.

Scientists haven't found a cure for cancer yet.