This is the 8546th most frequent Chinese word.
survey
The Chinese word for "survey" (调查, diàochá) means to investigate or examine a subject or situation systematically.
Here, '勘察' (survey) is used as a verb meaning to examine or inspect an area systematically.
我们必须在开始前对场地进行勘察。
We must survey the site before starting.
In this usage, '调查' (survey) again appears as a noun, emphasizing the action of studying or investigating historical aspects.
他对这片地区的历史做了全面的研究和调查。
He conducted an extensive study and survey on the history of this area.
In this sentence, '调查' (survey) is used as a noun to refer to a systematic collection of data about a specific topic.