黄土高原上，日子一天比一天红火。高铁开通，延安这本厚重的“大书”，正被越来越多的来客细细品读。
* Multiplies a 3✕3 matrix by a 3✕1 column matrix. The result is another 3✕1
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중동 해역의 긴장이 높아지면서 에너지 시설에도 영향이 나타나고 있다.
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The Pentagon, which started making capital commitments to U.S. venture capital funds around three years ago, has begun making new allocations to funds that invest in “critical” technologies it deems important to national security.