研究人员警告称，冻结在极地区域的毒素数量不明，而这些有毒物质的释放会对地球环境以及人类自身安全造成极大威胁。
The researchers warn that the amount of the poisons in the polar region is unknown and their release could "undermine global efforts to reduce environmental and human exposure to them".
当废弃的船只被拆除时，船只包含的有害物质就会释放到环境中。
Ships no longer in use contain dangerous materials which can be released into the environment when they are taken apart.
除了这些可见的物质外，类似默皮拉的火山同时会释放出二氧化硫，一种能对人类和环境产生多种影响的气体。
In addition to the visible releases, volcanoes like Mount Merapi also give off sulfur dioxide, a gas that can have a variety of effects on people and the environment.
应用推荐