switchn.转换；开关；鞭子v.改变；交换；转换；鞭打switch tree开关树switch step切换阶段switch room转换室,机键室switch line开关线switch into变为switchingonn.接通(接入)switched onadj.警惕的；最近的switchhousen.配电室switch jack机键塞口,机键插孔switch over切换； 转变