解数｜一图看懂“养虾”产业链：谁在建虾池，谁提供饲料

A correlative structure linking two clauses with 谁 to emphasize that whichever person does X, that person also does Y. Often used in headlines or comparisons to show parallel roles or responsibilities.

A formal negation pattern meaning “if X is not done, Y is not allowed.” X is usually evidence such as authorization, and Y is a prohibited action; commonly used in written notices and legal language.

This headline-style structure means “with a single [thing], do/understand something.” It highlights that only one item (like a picture or chart) is enough to achieve the action, making it concise and compelling.

Putting 在 before a verb indicates the action is currently in progress. It is one of the first ways learners express ongoing actions in Chinese.

Two verbs placed in succession where the first often describes the method or preparation for the second. This common structure expresses sequences like “do A to do B.”