This heat creates a strong high-pressuresystem that brings cold polar air into Europe.
由此产生的热量形成了一股强劲的高压系统，并把极低的冷空气带到了欧洲地区。
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Other important factors were warm winds flowing from Siberia around a high-pressuresystem parked over the ocean.
其他重要的因素是温暖的风从西伯利亚高压系统周围停在海洋。
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Because the winds at that level are pretty strong, the clouds aligned parallel to the direction of wind flow, in “streets” curving along with the flow of the high-pressuresystem.