Im-mediately after a race, each swimmer has an ear pricked to test for lac-tic-acid levels.
赛后每个泳者耳朵立刻用针扎一下，验血浆乳酸浓度值。
Im-mediately after a race, each swimmer has an ear pricked to test for lac-tic-acid levels.
赛后每个泳者耳朵立刻用针扎一下，验血浆乳酸浓度值。
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