基本解释透气孔，出气冒口英汉例句双语例句The top riser vent with big mesh size has excellent ventilation. It also effectively guard against flies.上方大网目透气网孔，通透气佳，即可有效预防苍蝇入侵。riser vent更多例句词组短语短语Vent Riser 排气体的管;垂直通气管riser vent更多词组