1、Because of its irritating effect on humans,the use of phenol as a general antiseptic has been largely discontinued.因为苯酚的刺激性,它已经不再作为普通的防腐剂被大量使用。
2、从长远来看,一个盈利性机构为了保持现有的盈利,生产的产品必须是消费者认为有用的或是满意的。
In group to remain in existence,a profit-making organization must, in the long run, produce someting consumers consider useful or desirable.
3、一个地方的人口密度越大,需要的水就越多,运输系统越繁忙,需要处理的垃圾也就越多。
The greater the population there is in a locality,the greater the need there is for water,transportation,the disposal of refuse. |