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Technological innovation is the primary driving force for the high-quality development of the natural gas industry.
悲伤不是线性的。它不会整齐地从否认走向接受。
物理定律产生了复杂的结构,至少在一种情况下,一个复杂的结构产生了物理定律。
A well-designed system should be easy to use, easy to understand, and easy to modify.