Without proper purification, physical or mental disorders can result from raising our creative forces prematurely.

不进行适当的净化，过早地提升我们的创造力会导致生理的或心理的紊乱。

youdao

Poor countries, where millions live in slums without proper sanitation, need more pipes in the first place, not to mention reservoirs and purification works.

不太发达的国家，成百万的人还住在贫民窟里，没有恰当的卫生设备，他们首先需要增加水管，更别提水库和净水措施了。

youdao