When reading, you do not need to bump into the new word to look up in a dictionary.
阅读时，你不必碰到生词就查字典。but he is not to be punished if the slave gets up after a day or two, since the slave is his property.
不过他若站得住一两天，他就不必受刑罚，因为那奴仆就等于他的银子。No. I said free lunches, the children don't have to pay for them. And there are many lunches involved, you know, a lot more than three.
男：不是。我说的是免费午餐，也就是孩子们不必付钱。而且你知道，这里面包含了很多次午餐，远远多于三次。No fear of him turning over in his grave. The doors are well bolted, the lid is on tight.
他在花岗岩床上熟睡，不必再担心他在坟墓中翻身，门都已闩好，棺材盖已关严。However, with the remote debugging technique you don't have to worry about any of that -- you have the power of full source-level debugging.
然而，有了远程调试技术，您就不必为之担忧了—您拥有完全源代码级调试的能力。But, as you can see, it's very easy to avoid this kind of mental work in favor of trading with an undisciplined, random approach.
但是，你也能看见，没有纪律，任意交易的方法更轻松，不必努力。He doesn't have to keep such trivia in his head, but can depend on the menu to keep it for him, available when he needs it.
他不必在脑海里记住这些琐事，可以在需要使用它时，依靠菜单回忆。While it's true that some oils are better for you than others, you don't have to cook with the same two or three every time.
虽然理论上一些油比另一些对你更有好处，你也不必每次都用相同的两三种。Unlike the hierarchical menu programs that came before it, a user didn't have to leave a productive screen to see a menu.
与在其之前的层次关系菜单不同，用户不必离开工作屏幕查看一个菜单，即可在工作屏幕上输入一个菜单命令。