| 51. | by force of contrast |
| 通过对比
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| 52. | The implementation of the ethnic regional autonomy system has further guaranteed the political rights of the Tibetan people, which is in marked contrast to the situation in old Tibet. |
| 民族区域自治制度的贯彻实施，进一步保障了西藏人民的政治权利，使西藏人民今天所享有的政治权利与旧西藏的状况形成天壤之别。
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| 53. | In contrast , "only one infectious particle is sufficient to trigger a B cell because that's the way na ture designed it," Hollis notes. "It's a beautifully sensitive system." |
| 与之形成对比的是，“一个传染原粒子就足以引发B细胞，因为自然界本身就是这样设计的，”霍利斯说：“这个系统异常灵敏，令人叹为观止。”
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