One of the most efficient ways to reduce stress is to focus inward on one thing we can effectively control: our own breath.
减轻压力最有效的办法之一就是将注意力集中到我们可以有效控制的东西上——我们自己的呼吸。
2
Other instances in which this pattern is useful include logging and printing, such as when you want only one instance of a class to access and controlone particular printer at a time.
Completely replacing onecontrol with another more relevant control is not as simple; you will need to delete an existing control, drop a new one on the form, and reconfigure it.