Now watch what happens when we start switching that laser between different solar cells on the robot.

现在我们开始把这个激光点移到不同的太阳能电池上面。

My brain could only handle one of these at a time, so I started switching back and forth.

我的大脑一次只能处理其中一个，所以我开始来回切换。

No doubt one reason why languages are endangered is because certain languages, such as English, becomes so popular that everyone starts switching to that popular language.

毫无疑问，语言濒临灭绝的一个原因是因为某些语言， 如英语，变得如此流行，以至于每个人都开始转向这种流行的语言。

American cities and towns started switching their streetlights from sodium lamps to LEDs about 15 years ago, which changed the color of many nighttime roads from yellowish orange to bright white.

大约 15 年前，美国城镇开始将路灯从钠灯改为 LED，许多夜间道路的颜色从黄橙色变成亮白色。

I experienced this when I started switching to a zero waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me.

五年前，当我和父母住在一起时， 当我开始转向零浪费的生活方式时，我就经历过这种情况， 我继续和我的丈夫一起经历这种情况，因为他并不像我一样完全零浪费。