It's the retail version of the doomsday machine.

这是零售界版本的死光炮塔。

youdao

My father spent years building his Doomsday Machine.

我的父亲花费了数年的时间来建造他的末日机器。

youdao

My father spent years building his Doomsday Machine.

我的父亲花费了数年的时间来建造他的末日机器。

youdao