1.(limits of effectiveness)(有效)范围；(正常)限度；+of telescope视程
2.(limits of fluctuation)+of issues, topics, activities, facilities, options范围；区间；幅度
The two men discussed a range of issues.那两个男人讨论了一系列问题。
a wide range of ages and backgrounds多样化的年龄和背景
a range of subjects一系列科目
We study a range of subjects.我们学习一系列学科。
There's a wide range of colours.有多种颜色。
range of significance【哲,逻】意义域
3.+of products产品系列
4.(maximum distance)+of missile射程
The 120mm mortar has a range of 18,000 yards.120毫米迫击炮射程1.8万码。
Tactical nuclear weapons have shorter ranges.战术核武器射程更短。
5.(distance to target)射程
The enemy opened fire at a range of only 20 yards.敌人在距离仅20米处开火了。
6.(shooting range)射击场；靶场；(火箭)试射场
It reminds me of my days on the rifle range preparing for duty in Vietnam.这使我想起了准备去越南服役时在射击场度过的时光。
an Army firing range一处陆军射击场