短語詞組短語equatorial pressure trough 赤道氣壓槽Northern Equatorial Countercurrent trough 北赤道逆流精Equatorial anomaly trough 赤道異常槽near -equatorial trough 近赤道槽doldrum equatorial trough 無風(fēng)帶赤道槽trade -wind equatorial trough 信風(fēng)赤道槽 返回 equatorial trough