她不时地给家人写信，保持联系。

Tā bùshí de gěi jiārén xiě xìn, bǎochí liánxì.

She occasionally writes letters to her family to stay in touch.

在这座古老的城市里，你会不时发现一些令人惊奇的事物。

Zài zhè zuò gǔlǎo de chéngshì lǐ, nǐ huì bùshí fāxiàn yīxiē lìngrén jīngqí de shìwù.

In this ancient city, you will occasionally discover some amazing things.

雨后，花园里的小鸟不时地歌唱。

Yǔ hòu, huāyuán lǐ de xiǎoniǎo bùshí de gēchàng.

After the rain, the birds in the garden sing from time to time.