Ambulators
n. [测] 测距仪；测程轮
🗣️ 情景例句
has agreed to take care of him for the weekend.
同意在周末照顾他。
Tidal wave
海啸
Jim ran very fast, but Yu Yan from Class 1 ran faster. He began to catch up with Jim.
吉姆跑得非常快，但是1班的余延跑得更快。他开始赶上吉姆。