到这里，我们最好暂停一下，来研究机制中最不可控制、同时也是最不可思议的一个因素：货币流通速度。
At this point we had better pause to examine that least controllable and most mysterious of all elements in the machine, the velocity of money.
同时，在一些事件中，我们有一些不可控制的人为因素把这些宝贵的企业置于艰难的困境。
At the same time, we have some uncontrollable and, in some cases, man-made circumstances that have put some of these treasured businesses in very difficult straits.
尽管澳航本身和航空分析人员一再强调，最新两起事件是由不可控制的因素导致的，与早前的空客A380引擎故障并无关联，但还是引起了各方的特殊关注。
The string of latest incidents is unrelated to the A380 scare and is caused by uncontrollable events, the airline and a commercial aviation analyst said.
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