For example, did you know that 1 in 4 teenagers has tried marijuana?
比如,你是否知道4个青少年中就有1位曾经吸过大麻?
In the organization of industrial life the influence of the factory upon the physiological and mental state of the workers has been completely neglected.
在工业生活的组织中,工厂对工人的生理和精神状态的影响完全被忽视了。