One who or that which points out.

指示者；指标。

A device by which an effect is pointed out.

指示器。

A substance, as litmus, used to show the condition of a solution.

【化】指示剂(用以指示溶液情形者)。

Any of a group of statistical values (as level of employment and change in the price of industrial raw materials) that taken together give an indication of the health of the economy.

经济指针(一组统计数字，如就业水准、工业原料价格等，合起来可对经济的健康状况作出指示)。