In practice ,a rotor weighing about 10 tons and rotating at 3,000 r .p . m . may be so well balanced that the motion ,except for sound ,is just perceptible.

实际上，一根据重约10吨、每分钟3000转的转子可以平衡得非常好，以致除了响声外，人们几乎觉察不出它是在转动。 [分析]此处just =almost not, hardly 曾误译为“正好觉察得出……”，这样意思就反了

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Practicing the Tai Chi solo form teaches one to remain balanced, focused and relaxed while in motion.

这种训练方式是叫一个人在运动的过程中保持平衡、放松、且集中精神的状态。

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Then the factors influencing the synchronism and stability of the shaker are discussed. At last the conditions of balanced elliptical motion are presented.

讨论了影响振动筛同步性能和稳定性的因素，给出了要实现平动椭圆运动的条件。

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At the end of the debate, MP rejected Labour's motion calling on the government to "adopt a more balanced deficit plan" and cut VAT to 17.5% to stimulate the economy by 305 votes to 208, a government majority of 97.

BBC: Opposition debate on the economy