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The piston ends its downstroke and begins moving upward, compressing the air/fuel mix until combustion happens and the whole cycle begins anew.—New Atlas, 14 June 2025 Hummingbirds are the only birds that create lift from both their upstrokes and downstrokes.—Scott Travers, Forbes, 21 Sep. 2024 Unlike most birds, hummingbirds can get a substantial amount of weight support and thrust from their upstroke, not just their downstroke.—Michael B. Habib, Scientific American, 16 Apr. 2024 Perhaps at a certain frequency the upstroke of a dolphin’s tail would load energy into the subdermal sheath, which would then spring back, helping push the tail through its downstroke.—Carl Zimmer, Discover Magazine, 11 Nov. 2019 See All Example Sentences for downstroke
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