Xī Tàipíngyáng shì quánqiú zuì fánmáng de hángyùn qūyù zhīyī.
The Western Pacific is one of the busiest shipping zones in the world.
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Very common in weather and geopolitics news: the 西太平洋 is the basin where Pacific typhoons originate, and also the theatre for the US Navy's 7th Fleet and China's 岛链 (island chain) strategic thinking. Often appears in the compound 西太平洋地区.
