1、由于人体对石碳酸的过敏作用,它作为杀菌剂使用已经大部分停止。
2、维持存活,一个盈利组织从长远看,必须生产顾客认为有用或感兴趣的东西。
3、一个地方的人口越多,越需要更多的水,交通,处理垃圾。
1. Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.
2. In group to remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable.
3.The greater the population there is in a locality, the greater the need there is for water, transportation, and disposal of refuse. |