"the theory of general will" is the central thread that runs through The Social Contract, it is also the key to understand the thought of Rousseau.

“公意学说”是贯穿《社会契约论》的中心线索，也是理解卢梭思想的钥匙。

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The central thread is interviews, recorded with shopkeepers and residents on an old-fashioned tape recorder.

ECONOMIST: Oxford

Walt is just waking up literally and figuratively when the story begins, and his re-entry into the world is the show's central thread.

WSJ: Longmire on A&E; The Glee Project on Oxygen; The National History Bee on History Channel | Television Reviews by Nancy deWolf Smith