短語(yǔ)詞組短語(yǔ)sailling on or about 澀左右Effective on or about 自…日起或在該日前后生效Sailing on or about 開(kāi)航日期;開(kāi)船日期;開(kāi)航日期約于;航行或約slg on or about 開(kāi)航日期EOA effectie on or about 大約在 返回 on or about