The 21st century is a big flow and big circulation age.

21世纪是大物流、大流通的时代。

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The circulation of materials is pushed by a big flow and low-lift axial flow pump.

料浆的循环靠大流量、低扬程的轴流泵推动。

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While it is a mature business, it is a big cash flow generator.

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In May, Enbridge, a Canadian company, reversed the flow of a big North American oil pipeline, sending a glut of oil from America's northern plains southward to coastal refineries.

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But a lot of folks are nervous about what might happen there, and so they're anticipating there might be a big disruption in terms of flow.

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