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.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, t...
熊猫每胎产仔一、二只.Pandas have only one or two young at a birth.动物或植物繁殖时, 他们产仔或种子.When animals or plants reproduce, they bring forth young ones or seeds.奶牛要产仔了.The dairy cattle are going to come in....