小孩一紧张就拽妈妈的衣角。

Xiǎohái yì jǐnzhāng jiù zhuài māma de yījiǎo.

Whenever the child gets nervous, he tugs at his mom's hem.

别拽电线，小心把电脑弄坏了。

Bié zhuāi diànxiàn, xiǎoxīn bǎ diànnǎo nònghuài le.

Don't pull the cable; be careful not to break the computer.