1.
In ducks and drakes, it seems, size matters.
在公鸭或是母鸭之间，看起来就是型号的问题。
2.
That interpretation is backed up by the fact that ducks with the most elaborate genitalia are those from species where the drakes have the largest penises.
以上论断的证据就是，哪里的公鸭阴茎最大，哪里的母鸭阴道最复杂。
3.
A small European duck(Anas querquedula)having a conspicuous white stripe over each eye and down the back of the head in the male.
巡凫一种体形小的欧洲鸭（鸭属白眉鸭），在公鸭的每个眼圈周围和头的后部有非常明显的白色条纹
4.
In particular, duck vaginas are often equipped with additional passages that have blind endings, and frequently corkscrew in a clockwise direction, in contradistinction to the anticlockwise thread of a drake's penis.
事实上，母鸭的阴道有很多具有顺时针螺纹的憩室，而对比来看公鸭的阴茎则有逆时针的螺纹。
5.
Effects of Environmental Temperature and Vitamin A on Testicular Development and Relative Hormones of Rearing Drake in Cage
环境温度和维生素A对育成期笼养公鸭睾丸发育及相关激素的影响
6.
Hereditary Character of Reciprocal Mule Duck
反交半番鸭（公家鸭×母番鸭）的遗传特性
7.
Among his most famous stories are "The Ugly Duckling", "The Princess and the Pea".
他的代表作有《丑小鸭》、《豌豆公主》，
8.
Cherry valley improves incubation of Peking duck eggs
樱桃谷公司提高了北京鸭蛋的孵化率
9.
Feasibility Study of the Yalu River Highway Bridge Project
中朝鸭绿江公路大桥建设项目可行性研究
10.
"Dick Cheney Duck Hunt" doll in hot sale
玩具公司开涮副总统“切尼打鸭子”新玩偶热销
11.
Study on the Nutrition Requirements of Metabolizable Energy, Crude Protein and Calcium of Male Mule Duck;
公骡鸭代谢能、粗蛋白质和钙营养需要的研究
12.
Reaserch on Employee Training Management of Zhongshan Xiaoya Air Conditioner Co., Ltd;
中山市小鸭空调有限公司员工培训管理研究
13.
Study on Organizational Structure Optimization of Guodian Shuangyashan Power Generation Co.,Ltd.;
国电双鸭山发电有限公司组织结构优化研究
14.
Research on the Bidding Strategys of Guodian ShuangYaShan Power Plant;
国电双鸭山发电有限公司的报价策略研究
15.
The Research of Marketing System about LittleDuck Co. Based on Knowledge Marketing;
基于知识营销的小鸭公司营销体系研究
16.
A Research on the Compensation Management System Reform in SG Co.Ltd of Shuangyashan;
双鸭山市SG公司薪酬管理系统的改革研究
17.
Analysis on Building Condition of Forest Park in Shuang Yashan City Forestry buearu;
双鸭山林业局森林公园开发建设条件分析
18.
Harmless Control Technology of the Main Diseases and Pests in Yaguang Pear
鸭广梨主要病虫害无公害防治技术研究