基本解释透氣孔，出氣冒口英汉例句雙語例句The top riser vent with big mesh size has excellent ventilation. It also effectively guard against flies.上方大網目透氣網孔，通透氣佳，即可有傚預防蒼蠅入侵。riser vent更多例句词组短语短語Vent Riser 排氣躰的琯;垂直通氣琯riser vent更多词组