a small animal which has smooth skin , lives in water and on land , has long powerful back legs with which it jumps from place to place , has no tail , and is usually greenish-brown in colour
发音
例句
1. He can see the frog. 他能看见这只青蛙。 2. Frog can live both on land and in water. 青蛙既能生活在陆地上也能生活在水中。