短语词组短語build -down 降落Too bad build -down 糟糕的降落Pressure build -down test 壓力降落試井build down proposal 逐步減少核力量的建議Build Down Period 還箱期build down pericd 還箱期build down clause 還箱條款Break Down Build Up 破壞Tear Down And Build 拆建 返回 build down