There is a duck under the tree.
树下有一只鸭子。
The boy wanted to duck under water .
这个男孩想潜入水中。
Because ducks stick their heads under water to feed; they duck their heads.
因为鸭子通常会将头埋到水里来喂食；而人们低头弯腰地样子和鸭子如出一辙。
The chicken does not believe, secretly with the duck, also under the water.
小鸡不信，偷偷地跟在小鸭后面，也下了水。
The Study on the Function and Growth of Meat Duck Preen Gland under Diffe…
肉鸭尾脂腺功能、生长发育及其受旱养方式影响研究；
The Study on the Function and Growth of Meat Duck Preen Gland under Diffe…
肉鸭尾脂腺功能、生长发育及其受旱养方式影响研究；
应用推荐