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单语范例（未经PONS编辑处理）
The story concerns the destruction of their crumbling home, which serves as fulcrum around which many themes revolve.
en.wikipedia.org This move unbeknownst became the fulcrum of the advanced base force's successful future.
en.wikipedia.org Another variation positions the camera atop a fulcrum braced against the photographer's chest or abdomen.
en.wikipedia.org With this approach, the fulcrum is situated at the back of the hand.
en.wikipedia.org The board is divided in the middle by a fulcrum made of welded steel.
en.wikipedia.org