And useful words must be committed to memory

有用的词要致力于记牢。

Otherwise, he could read the menu to find those less frequently used ones that he hadn't committed to memory.

否则可以通过阅读菜单找到那些没有记住而不常用的功能。

Pete: That won't be necessary. I have the day, time, and even their address committed to memory. Do you want to test me?

皮特：没那个必要。我已经记住了日期，时间甚至是他们家地址？你想不想考考我？