按照惯例

• as customary
• according to usual practice

例句

1. 不过，按照惯例，除非你方要求，否则我方是不投保这些险种的。
   But as a rule, we do not cover them unless you want to.
2. 按照惯例，我们在收到订单后七日内交货，对于急件，可在四日内交货。
   As a rule we deliver the goods within seven day, but in the case of urgent order, we can deliver them within four day.