双语例句原声例句
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自由负重器械和机器负重器械都是受欢迎的力量训练工具，但它们不是唯一的选择，你可以用并不昂贵的阻力塑料管（译者：我猜是指用硬塑料管之类的代替拉力器啥的），或者甚至用自身体重进行力量训练（译者：俯卧撑嘛）。
Free weights and weight machines are popular strength training tools, but they're not the only options. You can do strength training with inexpensive resistance tubing or even your own body weight.
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还有更多的可利用的系列书籍，超出了我在这里能够描述的篇幅限制，但是它们并不是唯一的可以找到你感兴趣主题的书籍。
Many more book series are available than I have room to describe here, but they are not the only place to find books on topics you're interested in.
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质量问题也许是对AOSD方法采用的最大的阻碍，但是它们并不是唯一的。
Quality issues may be the biggest deterrents to adopting AOSD methods, but they are not the only ones.
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They're not the only possible positions on the question of the metaphysics of the person.
它们不是哲学问题上,关于人类构造的唯一观点
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