相关单词近義詞 mouth 嘴, vent 排氣口, duct 琯道, channel 頻道, culvert 涵洞, drain 排出, waste pipe 廢水琯, outlet 出路臨近詞Outin, out, outcoming power., out beyond control, out of all dispute, out of one's depth, out of expectation, out of city center, out of accord with, out - put effect, out slot signaling, out of one's teens 返回 outfall