1 sentence

1. 例子包括一个拉长的橡皮筋，坐在滑梯顶部的人，和一个充电的电池。

   lì​zi bāo​kuò yī​ge lā cháng de xiàng​pí​jīn, zuò​zài huá​tī dǐng​bù de rén, hé yī​ge chōng diàn de diàn​chí.

   Examples include a stretched rubber band, someone sitting at the top of a slide, and a charged battery.

   Source: CCMatrix