1. to index “Tulip” under the entry “flower” 把“郁金香”这个词编入索引中的“花卉”条下
2. Index of average stock price is energy meter of economic power. 综合指数（平均股票价格）是经济力的活力仪表。
3. With the increase of colony density, the angle between stem and leaf and angle index have decreased trend. 其影响表现为随着群体密度增大，茎叶夹角和角度指数有减小的趋势。
英英解释
n.
1. a numerical scale used to compare variables with one another or with some reference number
2. a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can r
3. a mathematical notation indicating the number of times a quantity is multiplied by itself
4. an alphabetical listing of names and topics along with page numbers where they are discussed
5. the finger next to the thumb v.
1. list in an index
2. provide with an index
3. adjust through indexation
