by rule

• adv. 按规则；按照规定

例句

用作副词 (adv.)

1. Airplane pilots must always fly by the book.
   飞行员应按规则飞行。
2. He is very methodical in his work,doing everything by rule.
   他做事有条不紊，每件事情都是按规则做的。
3. The rule is that someone must be on duty at all times.
   按照规定，任何时候均需有人值班。
4. A refund can be obtained for the reinvestment if the reinvestment application is approved by certain national authorities and the profits to be reinvested have been realized.
   外国投资者计划用外商投资企业的利润进行再投资申请被国家有关部门批准时，该再投资的利润已经实现的，在实际再投资时，不论是一次或分期投资，均可以按照规定给予再投资退税。

词汇搭配

• by rule and line 准确地(精密地)...