1. In primitive cultures the obligation to seek and to receive the traditional instruction is binding to all.
    在原始文化中，寻求和接受传统教育的义务对全民都有约束力。

2. If you receive a request like this, you cannot fail to obey it!
    如果你收到这样的恳求，你是不会不遵照执行的！

3. For shoppers, one of the principal advantages of the computer-assisted system is the detailed receipt that they receive.
    这种电脑辅助的收款方式给顾客带来的最大便利之一就是他们能拿来到一张很详细的收据。