英语有二十六个字母，你都能背出来吗？

Yīngyǔ yǒu èrshíliù gè zìmǔ, nǐ dōu néng bèi chūlái ma?

English has twenty-six letters; can you recite them all?

孩子们正在学习认字母，每天练习写几个。

Háizimen zhèngzài xuéxí rèn zìmǔ, měitiān liànxí xiě jǐ gè.

The children are learning to recognize letters and practice writing a few each day.

这个密码必须包含大写字母和数字。

Zhège mìmǎ bìxū bāohán dàxiě zìmǔ hé shùzì.

This password must contain uppercase letters and numbers.