They concern the common things of life, and are the stock in trade of all who speak the language.
它们与生活中常见的事情有关，是说这种语言的人都具备的。
2
In this section, I've outlined the main trade-offs of AspectJ's language extension approach from the perspective of build integration.
这一节将从构建集成的角度描绘A spectJ的语言扩展方法的一些主要利弊。
3
This is a classic trade-off in language evolution: weighing the benefits of improving the language in an obvious way against the unknown risk of breaking some (possibly weird) programs.