westerlies 西風帶

westerlies
繁: 西風帶
簡: 西风带

中國當局承認一艘自己的飛艇（氣球）進入美國領空，但堅稱其用途是氣象研究，受西風帶影響的不可抗力偏離航線。

中國氣球：是否真如北京所說因偏離航線誤入美國領空—BBC事實核查（2023年2月5日）。BBC News中文，取自https://www.bbc.com/zhongwen/trad/science-64528022

China says strong “westerlies” blew the device “with limited self-steering capability” off its planned course.

China balloon: Could it have been blown off course as Beijing claims? (2023, Feb 4). BBC News. Retrieved from https://www.bbc.com/news/world-64514120