您要查找的是不是：
- He bought the captive bird from a hunter and then set it free. 他从一个猎人那里买下那只被关起来的鸟,然后把它放生了。
- The captive birds were trained to weigh themselves on electronic balances. 笼鸟被训练得自行在电子秤上称体重。
- Scientists are trying to increase this captive population, though not for reintroduction purposes. Instead, they want to ensure a healthy, diverse population of captive birds as a reinforcement to those in the wild. 虽然目的不是为了重新引进鹦鹉，科学家正试图增加人工饲养的鹦鹉的数量，希望人工饲养的鹦鹉种群健康、多样，以补充野生鹦鹉的数量。
- Scientists are trying to increase this captive population,though not for reintroduction purposes. Instead,they want to ensure a healthy,diverse population of captive birds as a reinforcement to those in the wild. 虽然目的不是为了重新引进鹦鹉，科学家正试图增加人工饲养的鹦鹉的数量，希望人工饲养的鹦鹉种群健康、多样，以补充野生鹦鹉的数量。
- Like the trembling heart of a captive bird 象俘获的鸟儿颤抖的心啊
- They were held captive by masked gunmen. 他们被蒙面的持枪歹徒劫持了。
- Men and birds are fain of climbing high. 不论人还是鸟都愿意往高处攀。
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- She was held captive for almost a month. 她被监禁了将近一个月。
- The penguin is a flightless bird. 企鹅是一种不会飞的鸟。
- He remained a captive to her beauty. 他始终为她的美貌所迷惑。
- The bird sang high and clearly in the tree. 鸟儿在树上清脆地高歌。
- The bird flapped its wings and flew away. 那鸟振翅飞去。
- Better be a free bird than a captive king. 宁做自由的鸟儿，不当被俘的国王。
- The birds perched on the television aerial. 鸟停在电视天线上。
- She crumb the bread before feeding it to the birds. 她把面包弄碎，然后喂给鸟吃。
- Henry was taken captive almost at the first engagement. 亨利几乎是刚一交战就被俘了。
- He was pleased to get up to the singing of birds. 他很高兴起床听到鸟的歌唱。
- Birds had begun to chirp among the trees. 鸟儿们已经开始在树林里叽叽喳喳地叫了。
- The cuckoo lays its eggs in other birds' nests. 杜鹃在别的鸟巢中产卵。
