隔三差五

jǐng fāng jī hū gé sān chà wǔ de zhǎo wǒ men de má fan

警方几乎隔三差五地找我们的麻烦。

We are almost routinely harassed by the police.

gé sān chà wǔ yòu yī fēng jiā xìn dài zhe shēn shēn de wèn hòu fēi xiàng fù mǔ shǒu zhōng

隔三差五，又一封家信带着深深的问候飞向父母手中。

Home letters are sent to my parents at intervals, with my deepest greetings.