But once you start publishing things in between covers, you actually have to decide what goes in and what goes out.

但一旦你开始把书籍加上封面出版，你就必须决定要出版哪些书。

耶鲁公开课 - 新约课程节选

I know to be a judge, you can't just become a judge, you usually have to practice as a lawyer first.

就我所知，你不能一开始就成为法官，你必须先成为一名律师。

为了更美好的世界 - SpeakingMax英语口语达人

So Milton is explaining to Charles Diodati that if you're going to become an epic poet, you have to start acting like one.

弥尔顿在这里像查尔斯，迪奥达蒂解释到,如果你想成为一名史诗诗人，你必须开始像一个史诗诗人那样做。

耶鲁公开课 - 弥尔顿课程节选

Nonetheless, in any given week, for the start of that week, you should have done the readings that are listed for that week.

虽然如此，在给定的时间里，在作为开始的那个星期，你必须完成,清单上所列出的那周的任务。

耶鲁公开课 - 死亡课程节选

And so you have to go back to the drawing board and realize Bubble Sort or whatever it is you're using just isn't enough to snuff, I need to come up with something more clever.

因此，你必须重新开始,而且会意识到冒泡排序,或你正在使用的方法并不理想，我需要提出一种更好的方法。

哈佛公开课 - 计算机科学课程节选