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So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.

從測定海深到測定魚群，這一進(jìn)展比較容易。

In the organization of industrial life the influence of the factory upon the physiological and mental state of the workers has been completely neglected.

在工業(yè)生活的組織中，工廠對工人的生理和精神狀態(tài)的影響完全被忽視了。

to discover whether they are mentally ill more often than other people are.

看一看他們是否比其他人更易患精神病。

but a medicine that had worked so well in one form of illness would surely be of equal benefit in another,

只知道一種藥對一種病有好處，肯定對另一種病也會有好處。

Before very long the parents will be complaining that the child is so secretive and never tells them anything,

不要很久，家長就會抱怨孩子守口如瓶，什么事也不告訴他們，

no crowd or movement in which he may take comfort,

找不到伙伴和活動使自己得到安逸。