ornithologists的例句（ornithologists在句子中的用法）

• Some ornithologists only Mute Swan classified as a swan. 有些鸟类学家只将疣鼻天鹅归为天鹅属.
• Ornithologists said it was too early too rule out feathered friends. 鸟类学家则说,现在排除鸟类还为时尚早.
• The ornithologists made Vs with their thumbs and forefingers, measuring angles. 鸟类学家们用大拇指和食指构成V形量测角度.