易混淆的单词： Nereis

It can hydrolysis to nereis in strong acid , alkali conditions .

在强酸、强碱条件下能水解为沙蚕毒素。

Nereis has a high nutritional value , in aquaculture has been widely used , harmless to humans and animals and crops .

沙蚕有很高的营养价值，在水产养殖中得到广泛应用，对人畜及农作物无害。

Nereis normally living in freshwater flow into coastal beach , intertidal zone to the subtidal zone in the sand and mud , while shanghai for close to the coast , most of the rivers in brackish water , it creates the environment for the growth of nereis .

沙蚕一般生活在有淡水流入的沿海滩涂、潮间带中区到潮下带的沙泥中，而上海因靠近海边，大部分河流都处于咸淡水质，所以造成了适合沙蚕生长的环境。