Given that predators can make it costly to beg for food, what benefit do begging nestlings derive from their communications?
既然捕食者可以让雏鸟为食物付出巨大代价，那么乞食的雏鸟们到底可以从这种交流方式中得到什么益处呢？
All that time my wife and children had to beg for food and help from relatives or friends.
那段时间我的妻子和孩子不得不向亲戚或朋友乞求食物和帮助。
One day, an old beggar went to a village. He knocked at the door of a rich man to beg for food.
一天，一个老乞丐来到一个村子里。他敲了一个富人家的门，想跟他讨点儿东西吃。
You should go to some kind-hearted folk to beg for food because you are poorer than anybody else.
你应该去找一些善良的人们讨些饭吃吧，因为你比谁都要穷！
And they mooch free meals in part by waggling their heads to beg for food like all the other ant grubs.
这些寄住在红蚁巢穴的蝴蝶毛虫，有时学着蚂蚁幼虫摇动自己的脑袋乞求免费的午餐。
The bears had learned to beg for food, and visitors welcomed the chance to get their pictures taken with them.
那些熊也已经学会了讨食，而游客们也愉快地接受和它们拍照的机会。
My father would leave early in the morning carrying a little basket to beg for food or ask for food 11)on credit.
父亲每天早早就提着一个小篮子去乞讨或者赊借食物，到晚上十点左右才回到家里。
You'll hear that the Americans who sleep in the streets and beg for food got there because they're all lazy or weak of spirit.
你们会听说一些美国人之所以露宿街头、乞讨食物，是因为他们懒惰或懦弱。
None of the village people could help me, and I could not bring myself to beg for food, although by now I felt weak and faint.
村里没人能帮助我；而且尽管我感到虚弱头晕，却不能让自己去乞讨。
Poor men will invest their last shilling in a lottery, hoping to secure a prize, and then they have to beg for food to sustain life, or go hungry.
贫穷人要把他们最后的硬币投在彩票上，希望中奖，然后他们不得不乞讨食物来维生，或者挨饿。
In the experiments, the two sets of animals were given the opportunity to beg for food, either from an attentive person or from a person unable to see the potential begger.
在实验中，这两种动物被给予了向人讨要食物的机会，一种是肯帮忙的人一种是从看不见潜在乞讨者的人。
When you see the places where children beg to braid hair to have money for food, believe me, your perspective gets a little electro-shock therapy.
如果你见到了孩子们乞求给别人编辫子来讨生活的景象的话，你会如同受到电击疗法一样改变自己的视角。
The warning, of course, came true, prompting the terrified people to beg Columbus to restore the moon — which he did, in return for as much food as his men needed.
当然，警告成真了，这让大惊失色的人们乞求哥伦布将月亮还原——他就这么做了，换来了他的船员们需要的食物。
"I really want to work," she said. "There was a time when for three or four nights we didn't have food, but I never went out to beg."
“我真的想工作，”她说，“曾有段时间我三四个晚上都没有吃的，但我绝不出去乞讨。”
“I really want to work, ” she said. “There was a time when for three or four nights we didn’t have food, but I never went out to beg.
“我真的想工作，”她说，“曾有段时间我三四个晚上都没有吃的，但我绝不出去乞讨。
The disciple was sure that they were going to beg for their food, and sleep in the park at night.
弟子认为他们将乞求路人施舍的食物，并在公园里过夜。
The disciple was sure that they were going to beg for their food, and sleep in the park at night.
弟子认为他们将乞求路人施舍的食物，并在公园里过夜。
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