Why do the seal's laboratory dives always evoke this response, regardless of their length or depth?
为什么不管它们潜水的长度和深度如何，海豹在实验室潜水时总是会引起这种反应？
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The lactic acid is released into the seal's blood only after the seal surfaces, when the lungs, liver, and other organs quickly clear the acid from the seal's bloodstream.