The wild benthic Marine algae include rich nutrient and trace element and active substance of biology.

野生底栖海藻含有丰富的营养，尤其是微量元素和生物活性物质。

youdao

It has great significance to trace back to the questing and inquiring of western traditional philosophy of substance at present age.

在当代，追溯西方传统哲学对实体的追问和探究，具有重要的意义。

youdao

Objective:To develop a method for the detection of trace organic substance in deionized water.

目的：研究一种去离子水中微量有机物质的测定方法。

youdao

The fact that humans can ingest the substance inadvertently by eating beef is putting pressure on Wada's rules, which deem the slightest trace to be a doping infringement.

BBC: Ban on clenbuterol doping drug may be relaxed