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| 11. | A muscle contracts when it is irritated by an electric shock. |
| 肌肉受电击刺激便会收缩。 |
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| 12. | When a muscle is contracted it will squash and when extended, it stretches. |
| 肌肉收缩就是挤压，肌肉舒展就是拉伸。 |
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| 13. | an abnormal rate of muscle contractions in the heart. |
| 心脏肌肉收缩不规律。 |
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| 14. | The shortening and thickening of functioning muscle or muscle fiber. |
| 收缩工作肌肉或肌肉纤维的变短和变粗 |
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| 15. | Muscle shortening is the product of repeated contraction of the cross bridges. |
| 肌肉收缩是重复收缩,交叉桥的产物。 |
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| 16. | a painful and involuntary muscular contraction. |
| 疼痛不是自愿的肌肉收缩。 |
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| 17. | abnormally long muscular contractions; slow relaxation of a muscle after a contraction. |
| 肌肉不正常的拉长；肌肉收缩后缓慢放松。 |
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| 18. | an inotropic drug. |
| 一种促使肌肉收缩的药 |
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| 19. | violent uncontrollable contractions of muscles. |
| 猛烈而无法控制的肌肉收缩。 |
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| 20. | Adrenalin pumps round the body, the muscles contract, |
| 肾上腺素在体内分泌 肌肉就会收缩 |
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