1.
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
2.
Molecular Cytogenetic Study on Mule Duck (Muscovy(?)×Gaoyou Duck♀);
骡鸭（番鸭（？）×高邮鸭♀）分子细胞遗传学研究
3.
Study on Practice of Artificial Insemination Technique in Mule Duck Production
骡鸭生产中人工授精技术的应用研究
4.
The effect of wheat on overfeeding of mule ducks was studied and the feasibility of producing fat liver of mule ducks fed with wheat instead of corn was discussed.
研究小麦对骡鸭的超饲养效果,探讨小麦代替玉米用于骡鸭肥肝生产的可行性。
5.
Hereditary Character of Reciprocal Mule Duck
反交半番鸭（公家鸭×母番鸭）的遗传特性
6.
6. Make an over-all plan for the protection and breeding of cattle, horses, mules, donkeys, pigs, sheep, chickens and ducks, and especially for the protection of young animals.
(六)全面规划保护和繁殖牛、马、骡、驴、猪、羊、鸡、鸭，特别要保护幼畜。
7.
Effects of Different Levels of Metabolizable Energy and Crude Protein and Calcium on the Fatty Liver Performance of the Mule Ducks;
不同能量、蛋白质、钙水平日粮对骡鸭产肝性能影响的研究
8.
Effect of Enzyme on Production Performance and Digestion in Mule Ducks Fed on Miscellaneous Meals;
骡鸭杂粕日粮加酶对其生产性能及消化机能的影响
9.
a mule is a cross between a mare and a donkey.
骡子是母马和公驴的杂交后代.
10.
A mule be a hybrid of a male donkey and a female horse
骡子是公驴和母马交配而生的杂种动物
11.
A mule is a hybrid of a male donkey and a female horse.
骡子是公驴和母马交配而生的杂种动物.
12.
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。
13.
Grand Canyon national park does offer mule ride down to the bottom of the canyon, i. e, all the way to the Colorado River.
大峡谷国家公园并不提供骡骑到峡谷的底部,科罗拉多河.
14.
Matre Simon Sanguin, the elector of the Nation of Picardy, with his wife on the saddle behind him.
庇卡底的选董西蒙·桑甘老公来了，他带着老婆，让她坐在骡子屁股上。”
15.
The sterile hybrid offspring of a male donkey and a female horse, characterized by long ears and a short mane.
骡公驴和母马杂交的无繁殖能力的后代，特征是鬃毛短、耳朵长
16.
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》，
17.
Cherry valley improves incubation of Peking duck eggs
樱桃谷公司提高了北京鸭蛋的孵化率
18.
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。