bullfrogs的例句（bullfrogs在句子中的用法）

• The noise in the zoo turned out to be the croaks of bullfrogs. 动物园里喧噪得很,原来是一群牛蛙在叫.
• Although bullfrogs were introduced into mainland China in 1959, they were not wildly raised until 1990. 1959年牛蛙被引入中国大陆, 但直到1990年才开始在国内大范围饲养.
• Bullfrogs became lethargic with the first cold nights. 在开始的那些寒冷夜晚,牛蛙变得无精打采.
• Since ten years ago, it was bullfrogs, geese, ducks. 十年前就有牛蛙, 鹅, 鸭子什么的.