He had to duck as he came through the door.
他穿过门口时得弯下身来。
Rotating 16 birds through the positions in a four-duck row, the researchers found outer birds half-asleep during some 32 percent of dozing time versus about 12 percent for birds in internal spots.
研究人员把16只鸟按顺序4只排成一排，发现外面的鸟在32%的时间里处于半睡眠状态，而内部的鸟只有12%的时间处于半睡眠状态。
He had to duck his head to get through the low doorway.
他只得把头低下才能通过那低矮的门道。
To prepare the duck, chefs go through a lengthy process.
为了制作烤鸭，厨师需要经历漫长的准备过程。
Players flick through menus with waves of the hand and then move to make their on-screen avatars run, jump, duck, swing and dance.
玩家们只要在菜单上轻轻挥挥手，就可以让他们的游戏中的角色奔跑，跳跃，弯腰，转身和跳舞。
Said the Duck to the Kangaroo, 'I would sit quite still, and say nothing but "Quack, " The wholeof the long day through!
鸭子对袋鼠说，“我会安静地坐着，一动也不动，除了嘎嘎叫，什么也不说。一整天我都会这样子！
She had to duck her head to get through the low doorway.
她不得不低下头才能穿过低矮的门口。
A: Please stop me if you have any question. B: I well. A: Duck your head as you go through the door there. B: Thank you. A.
有任何问题，请随时叫我停下来。B：好的A：经过那儿的门时，请将头放低。b：谢谢。
She had to duck to get through the low doorway.
她必须低头通过低低的门口。
Through single factor test initially set up a suitable for duck solid fermentation medium optimization formula: plus accessories for the bran, and adding 1.5% ammonium sulfate.
通过单因素试验，初步确定适于鸭粪固体发酵的培养基优化配方为：外加辅料为麸皮，并加入1.5%硫酸铵。
She had to duck to get through the low doorway.
她必须低头通过低低的门道。
"Emperor poultry brand" the sauce duck, duck, duck wing flax crisp, duck palm through authentication center China green food authentication, get use green food logo.
“皇禽牌”酱鸭、麻酥鸭、鸭翅、鸭掌通过中国绿色食品认证中心认证，获得绿色食品标志使用权。
It's analyzed and inquired into optimality design of duck propeller. Mathematical models are set up. It shows it's practicable through example.
对导管螺旋桨进行优化设计的分析与探讨，建立优化数学模型，通过实例说明其可行性。
The next bird flies overhead, and the pathologist looks at it, then looks through the pages of a bird manual, and says, "Hmmmm … green wings, yellow bill, quacking sound … might be a duck."
第二只鸟飞过头顶，有福不在忙医生对着鸟类图谱看了看说：恩，绿色的翅膀，黄色的嘴，嘎嘎的叫声…应该是只鸭子。
Researchers reviewed three outbreaks in early 2004 through late 2005. They looked at five variables: duck abundance, human population, chicken Numbers, elevation and rice cropping intensity.
研究人员检查了2004年初到2005末的三次爆发，他们注意到了五个变化的因素：鸭子的多少，人类的人口，鸡的数量，海拔和稻米种植密度。
Researchers reviewed three outbreaks in early 2004 through late 2005. They looked at five variables: duck abundance, human population, chicken Numbers, elevation and rice cropping intensity.
研究人员检查了2004年初到2005末的三次爆发，他们注意到了五个变化的因素：鸭子的多少，人类的人口，鸡的数量，海拔和稻米种植密度。
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