量子点是一种很小的物质颗粒，以致于增加或减少一个电子都可以改变它的属性。
A quantum dot is a particle of matter so small that the addition or removal of an electron changes its properties in some useful way.
问题是，人们通常不能直接观察竞争，而必须从一个物种的扩展或增加和同时另一个物种的减少或消失来推断。
The problem is that competition ordinarily cannot be observed directly but must be inferred from the spread or increase of one species and the concurrent reduction or disappearance of another species.
一个通常的关于质量的误解是，你可以换掉它来改善开发速度，减少成本，或增加功能。
One common misconception about quality is that you can trade it off to improve development speed, reduce costs, or add functionality.
应用推荐