三轮汽车

例句：

1. 1. The old man rode a tricycle to the market every morning.
   老人每天早上骑着三轮车去市场。
2. 2. The children enjoyed riding tricycles in the park.
   孩子们喜欢在公园里骑三轮车。
3. 3. The tricycle was a popular mode of transportation during that time.
   三轮车在当时是一种流行的交通工具。