lenad

例句：

1. 1. The marathon is a long-distance race that requires endurance and stamina.
   马拉松是一项需要耐力和毅力的长距离赛事。
2. 2. The scientist extended the experiment to include more variables.
   科学家将实验扩展到更多的变量。
3. 3. The car was elongated to fit the new tire size.
   汽车被加长以适应新的轮胎尺寸。