They also take up much less space (a typical LED is about the size of the rubber on the end of a pencil), are shock resistant and, perhaps most important of all, are extremely energy-efficient.
且他们体积小得多（典型的LED大概就是铅笔顶上橡皮大小），不怕碰撞，并且也许更重要的是它的超级功效。
Many transistors are smaller than the eraser on the end of a lead pencil.
很多晶体管都比铅笔头上的橡皮还要小。
Many things. For example, the wood in your pencil, the rubber on the end of your pencil, and the paper in your notebook all come from trees. Also, do you enjoy fresh air?
许多事情。举例来说，其木材在你的铅笔、橡胶在年底，并从你的铅笔在你的笔记本上都来自树木。同时，你喜欢新鲜空气。
应用推荐