“微量”用英语怎么说？

微量毒素infinitesimal traces of poison这种鱼体内有微量的毒素.There are traces of poison in the fish.即使是极微量的有害物质,也会造成极大的灾难.Even the smallest amount of wrong substances could cause complete catastrophe....

“微量”的拼音为：wēi liàng...