Geologic sketch drawing is basic work which geologic party invests great technical force and money.
地质素描的编绘工作也是地质队投入技术力量最多的、最经常的一项基础性工作。
The sketch can only be rather rough since the details are somewhat technical and cumbersome.
这份概要只是粗略的概述，因为具体细节有些专门化而且很繁杂。
The sketch can only be rather rough since the details are somewhat technical and cumbersome.
这份概要只是粗略的概述，因为具体细节有些专门化而且很繁杂。
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