Because the source of the energy stops, the electrical current stops - just as a light bulb turns off when you switch off the electricity running to it.
因为一旦能量的来源被切断了，电流就会被切断——就好像当你关上开关，切断电流的时候，灯泡会立刻熄灭一样。
Because the source of the energy stops, the electrical current stops -just as a light bulb turns off when you switch off the electricity running to it.
因为一旦能量的来源被切断了，电流就会被切断——就好像当你关上开关，切断电流的时候，灯泡会立刻熄灭一样。
“Even though the panel will not be large enough to power the entire car, it could provide enough power to switch the engine off and on when the car is stopped at a traffic light, ” he said.
“尽管面板不能提供整辆车的动力，但是当车遇红灯停下时，它足以提供发动机熄火和启动所需的能量了。”他继续说。
"Switch off the computer and get to bed," I yell, as I get ready to turn off my own bedroom light.
在我准备关掉自己房间的灯光时，我大喊：“关掉电脑上床睡觉”！
Xavi: OK, but don't forget to switch it off before you go, ok?… See you tomorrow… (turning off the light) It's better, this way.
可以啊，但你要记得走之前把它关掉，好吗?…明天见…（关灯）这样看得清楚点。
"Even though the panel will not be large enough to power the entire car, it could provide enough power to switch the engine off and on when the car is stopped at a traffic light," he said.
“尽管面板不能提供整辆车的动力，但是当车遇红灯停下时，它足以提供发动机熄火和启动所需的能量了。”他继续说。
"Even though the panel will not be large enough to power the entire car, it could provide enough power to switch the engine off and on when the car is stopped at a traffic light," he said.
“尽管面板不能提供整辆车的动力，但是当车遇红灯停下时，它足以提供发动机熄火和启动所需的能量了。”他继续说。
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