所有这些要求顺序操作相应开关、阀门和控制变频器来完成。

All these requirements order operation switch, valves, and corresponding control frequency converter to complete.

youdao

机身上没有按钮，只有一个电源开关，这个开关同样也能控制歌曲顺序还是乱续(shuffle)播放，就像它的名字所指。

There are no buttons, for instance-only a power switch that also controls whether songs are played in sequence or "shuffled," as the name implies.

youdao

一旦所有三个开关打开(按顺序)的主灯将发光红色。

Once all three switches are turned on (in order) the Main light will glow red.

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