La Nina is a natural 3-6-year cycle, and the cold stretch of a periodic thermal oscillation in ocean surface temperatures that occurs throughout the tropical Pacific.
拉尼娜每隔3到6年发生一次，太平洋热带地区海水温度会随之发生周期性的异常变冷。
PTA prices downward trend after the lunar New Year as a whole to maintain oscillation, while during the rebound, but the lack of bright spots.
PTA价格在春节后整体保持振荡下行态势，期间虽有所反弹，但表现缺乏亮点。
PTA prices downward trend after the lunar New Year as a whole to maintain oscillation, while during the rebound, but the lack of bright spots.
PTA价格在春节后整体保持振荡下行态势，期间虽有所反弹，但表现缺乏亮点。
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