discrete magnitude的用法和样例：
例句
- Discrete mathematics is part of modern mathematics and a branch of studying the structure and interrelation of discrete objects.
离散数学属于现代数学的范畴，是研究离散量的结构及相互关系的学科。 - Single-clicking typically selects the smallest useful discrete amount and clicking and dragging selects a larger quantity, but there are other significant differences.
单击通常选择最少有用的离散量，而单击并拖动可以选择较多量，但还有着其他显著的不同。
