out of commission   (TTS發音)

1. retired from active military service退役；不再執行任務

    When the war was over，many warships were placed out of commission. 戰爭結束後，許多戰艦都退役了。

2. not in use or working不能使用；損壞

    Some of the bridges were out of commission. 有一些橋梁不能使用

    She had to go to school on foot because her bike was out of commission. 因為自行車壞了，她只得步行去學校。