But her equipment, too, must be set to one mode or the other, and she cannot be certain that the polarity of the photon she sends to Bob is correct.

同样，她的设备也只能选取一种模式进行发送，由于信息是后验的，她并不能确定其送给“鲍勃”的光子极性是否正确。

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China is a major buyer of German industrial equipment but not of other German products.

中国是德国工业设备的一大买家，但买进的其他德国产品却并不多。

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But they claimed that, because of their race, they were treated differently and denied other equipment.

不过，他们说自己由于种族原因受到了不平等的待遇，也没有任何其他装备。

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The first phase of the solar mission stipulated that solar farm operators using silicon wafers should only buy made-in-India versions of this equipment but allowed them to import other forms of technology, including thin-film cells.

WSJ: India Plans Subsidies to Boost Solar-Power Sector

Long lead times persist for oil drilling rigs, mining equipment and some other specialized machinery, but generally companies face no supply limitations when considering expansion.

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But in the meantime, sometimes just playing music without any other equipment is enough and better than not playing music.

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