Thus, Algae can be used as indicator organisms for assessing water pollution of the Huanghe River.

表明藻类可作为宏观评价黄河水体环境质量的指示生物。

youdao

Indicator organisms are bacteria which are found in soil and water and in the faeces of animals.

BBC: Carrots

If tissue-culture technology, a predecessor to genetically modifying organisms, is any indicator, the payoff for Africa could be huge.

FORBES: Millions Served

We need to illuminate the types of responses by individual organisms elicited by different noises, likely focusing mostly on keystone, indicator, and species already identified as endangered.

UNESCO: MEDIA SERVICES