短语词组短語shiftable ramp 移動坑線shiftable employment 轉移就業Shiftable window 可移動窗口shiftable spanner 活動扳手shiftable mould -board 可拆換的刀片Non -shiftable 不可移位shiftable haulage line 移動線路Variable shiftable valve lift controls 可變档位氣門陞程控制 返回 shiftable