There is no extra charge for these—just plug in, select the required language and adjust the volume.

这些都不需要额外的费用，只需插入电源，选择所需的语言并调节音量即可。

youdao

It will still have a charge even if I forget to plug it in overnight, for example.

就算我一个晚上忘了充电，第二天还是可以用。

youdao

But it would surely be easier simply to use this energy to charge the batteries of all-electric or plug-in hybrid vehicles.

但是这肯定也只是能让使用这个能源给全电力汽车或混合动力汽车的电池充电时更加容易。

youdao

Ford calls C-MAX Energi a "hybrid-plus" because it not only operates just like C-MAX Hybrid, but also features an external charge port and larger lithium-ion battery pack so owners can plug in the vehicles to fully charge the battery using either a standard 120-volt outlet or the available 240-volt charge station.

ENGADGET: Ford C-Max Energi pricing: $29,995 after a federal tax credit, available this fall

Because owners plug in to charge the advanced lithium-ion battery in C-MAX Energi, the vehicle is able to achieve increased electric mode and total range.

ENGADGET: Ford's 2013 C-Max Energi rolls out 95 MPGe, arrives later this fall

We can imagine the day when you'll be able to charge the battery on your plug-in hybrid car at night, because your smart meter reminded you that nighttime electricity is cheapest.

WHITEHOUSE: President Obama Explains the Smart Grid and Economic Recovery | The White House