pipe down片語動詞KK [paɪp daʊn] /paɪp daʊn/發音片語動詞1安靜下來、住嘴、別吵口語,多用於命令句Pipe down, you two, I'm trying to work in here.你們兩個安靜點,我在這裡工作呢。2收斂、消氣、冷靜下來口語He piped down as soon as the manager walked in.經理一進來,他立刻就收斂了。