按例

àn lì zhè r de shū bù chū jiè

按例这儿的书不出借。

According to our practice, the books here are not to be loaned.

jīn tiān zǎo shang tā méi àn lì dǎ diàn huà gěi wǒ

今天早上她没按例打电话给我。

When she missed her phone session this morning.

àn lì wǒ hái shi yào zhèng shì xuān bù

按例我还是要正式宣布。

I still want to make a formal announcement.