He must become a skilled radio operator and be able to repair his own equipment.
他必须成为一名熟练的无线电操作员，能够修理自己的设备。
I'm a Ham radio operator and spend some time working with radios and electronics.
我是一个业务无线电爱好者，喜欢花时间在无线电和电器方面。
The tractor and Radio control transmitter that allows the operator to control its movements.
拖拉机和无线电控制发射机，让营办商控制其运动。
The tractor and Radio control transmitter that allows the operator to control its movements.
拖拉机和无线电控制发射机，让营办商控制其运动。
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