计算实例表明，用计量式计算比试差法更方便有效。
The example shows that the formula is more efficient than the trial and error method.
网购证明了这是一项能更方便有效的方式来买到你想要的商品。
Online shopping has proven to be a much more convenient and efficient way to find and buy the things you want.
它能提供方便有效的数据复用和解复用功能，并能可靠地传输数据。
It provides high availability and very reliable transport with powerful multiplexing and demultiplexing capabilities.
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