菜蛙

例句：

1. 1. The frog was hopping around in the pond.
   青蛙在池塘里跳来跳去。
2. 2. The tadpole had grown into a small frog by the time it reached adulthood.
   当它长成小青蛙时，它已经达到了成年。
3. 3. The frog croaked loudly as it swam to the other side of the pool.
   青蛙游到池子的另一边时，发出了响亮的叫声。