I have convinced myself, by personal observation and inquiry, that my description of the male attitude in this respect is in no way exaggerated.

通过个人观察和询问，我确信我对男性在这方面的态度的描述并没有夸大其词。

For centuries, any attempt to forecast the weather could only be based on personal observations, but in the fifteenth century scientists began to see the need for instruments.

持续了几个世纪的时间，任何天气预报的尝试都是基于个人观测，但是在十五世纪科学家开始意识到工具的重要性。