Though the heavy metal lead is largely gone from our gasoline and paint, it still lies insidiously below us in the ground and occasionally drifts through the air as dust.
尽管金属铅大部分通过汽油和油漆排放出去了，但任有一部分藏在我们看不见的地下，有时候作为灰尘漂浮在空气中。
If your old house has lead paint in good condition, cover it with fresh paint rather than removing it, which releases lead dust into the air.
如果你的房子曾经刷过含铅的油漆，并且漆层还比较好，最好的方法是用新的不含铅的油漆覆盖旧的漆层，而不是去除老的含铅的漆层，因为这样做，铅尘反而排放到空气当中了。
They protect workers against everything from flour dust in a grain elevator to the damaging organic chemicals in paint spray.
从谷物升降机内的粉尘到喷漆中的有害有机物，这些面具保护工人免遭它们造成的伤害。
应用推荐