Exactly. Besides, packaging has to be convenient and safe in delivery, that is the principle of circulation.
完全正确。除此之外，包装还必须满足运输时的方便、安全原则。这就是流通原则。
This film combined dreams within dreams and the principle of circulation, describing the up-and-down life of the main character in black humour.
本片结合梦中梦与无限回圈的原理，以黑色幽默的手法描述主角一生起落的过程。
It was less than two years after the principle of solid circulation was confirmed in the large-scale pilot plant.
这距固体循环的原理在大型中间试验装置中得到确认之后不到两年。
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