The cost of putting equipment under water and concerns about the impact on the Marine environment have kept tidal experimental, but that's beginning to change.

设备的水下安装成本和影响海洋环境的担忧耽搁了潮汐能试验，但是这种局面正在改变。

youdao

Analyses are made on chemical composition, trace elements, microbiological analyses, environment impact of food products, monitoring the Marine biosphere.

主要研究工作包括化学成分分析、微量元素及微生物学分析、环境对食品工业的影响、海洋生物圈的监测等。

youdao

The result shows that the decay of residue chlorine is quick, and its impact on the marine environment very little.

研究表明，余氯衰减很快，其对外环境的影响很小。

youdao

It was of "particular importance" given the negative impact of plastic bags on the environment, animals and marine species, he said.

BBC: Mauritania bans plastic bag use