Range的三层意思
* range 1
n.〔数、量、年龄等的〕范围
age / price / temperature range
年龄/价格/温度的范围
* a range of
一系列
a range of services
一整套服务
The drug is effective against a range of bacteria.
这种药对一类细菌有效。

* range 2
n. 射程
* range 3
n. 山脉
a land of high mountain ranges and deep valley
一片有高山深谷的土地