"It's more of an occupational hazard than a general environmental hazard, " he says. "The miners are surrounded by rocks and sloshing through ground water that is exuding radon."
“这更像职业危害而不是环境危害”他说，“矿工被岩石包围着，还要涉过释放氡的地方积水”。
2
There was little water in the river, but a profusion of water-weeds gave it the appearance of a long greasy green belt, narrow and dark, exuding a faint dank smell.