1、You'd better use the electric cord if you want to use the radio since the batteries are run down.
如果你要聽(tīng)收音機(jī)的話最好用電線，因?yàn)?/a>電池沒(méi)電了。

2、an electric cord used to extend the length of a power cord
延長(zhǎng)電源線長(zhǎng)度的電線。

3、an electric cord used to extend the length of a power cord.
延長(zhǎng)電源線長(zhǎng)度的電線。