The idea for the experiment came from observing the birds using tools to pick at random objects, such as a picture of a spider that was printed on some cloth.
这个实验的想法来自于观察鸟类使用工具随机挑选物体，比如在一些布上印有蜘蛛的图片。
There is no need to pick at him all day long. He's a child after all.
不要老是对他唠唠叨叨，他毕竟还是个孩子嘛!
Vultures flew around in the sky waiting to pick at the carcass of the deer.
兀鹰在天空盘旋等待着啄食鹿的尸体。
Historians will find things to pick at-how could they not in a whistle-stop journey through 600 years?
历史学家会发现有东西可写-他们怎么会在短暂逗留后停下600年的历史进程呢？
We want our self-confidence to be really up there, and when you look in the mirror and you start to pick at your thighs and your calves and it starts to erode your self-esteem, that's not good.
我们想要很有自信，但是当你站在镜子面前开始拨弄自己的大腿和小腿时，它侵蚀着你的自尊，这种感觉很不好。
We managed to pick up a few bargains at the auction.
我们从拍卖场买到了几件便宜货。
The trucks waited at the warehouse to pick up their loads.
货车在仓库等着装载货物。
You have to pick them up at six a.m.
你得在早上六点的时候来拿。
"It was rough, with big scales,'' said Swisher, who was on her way to pick up her friend at the airport when it happened.
事发时斯威舍正在去机场接朋友的路上 ，他说：“它很粗糙，鳞片很大。”
"It was rough, with big scales," said Swisher, who was on her way to pick up her friend at the airport when it happened.
事发时斯威舍正在去机场接朋友的路上，她说：“它很粗糙，鳞片很大。”
She rushed to pick up all the money she could find at once, and a lot of people came to help her as well.
她立刻去捡她能找到的所有的钱，很多人也来帮助她。
A leatherback may be able to pick up some body heat by basking at the surface; its dark, almost black body color may help it to absorb solar radiation.
棱皮龟可以通过在水面上晒太阳来为身体获取热量；深色近乎黑色的身体颜色可以帮助它吸收太阳辐射。
People definitely go down there to pick up some items that they can't get at Tom Ford or Diesel.
人们肯定会去那里买一些在汤姆·福特或狄塞尔那无法买到的东西。
In a chaotic two days of flying, the rescue team flew 3,000 miles round-trip from the British station Rothera to pick up the workers in the U.S. Amundsen-Scott Station at the South Pole.
救援队从英国的罗瑟拉站出发，在状况百出的两天中飞行往返3000英里，接回了南极美国阿蒙森-斯考特站的工作人员。
Six birds have just been trained to pick up rubbish at a French historical theme park.
法国一家历史主题公园训练出了六只会自己捡垃圾的鸟。
I am asked to pick up the guest speaker Bob Russell at the airport this afternoon.
我接到要求，今天下午去机场接客座发言人鲍勃·拉塞尔。
A good tip is to pick people out and look at them for around five seconds. Not looking at the audience gives the impression that you're either not interested in them or terrified of them.
一个很好的建议是挑一些人，看着他们大约五秒钟。不看观众会给人留下这样的印象：你要么对他们不感兴趣，要么对他们感到恐惧。
I'm going to pick a definition from a former colleague, Robert Sternberg, who is now the dean at Tufts University but was here on our faculty at Yale for nearly thirty years.
我将从我的前同事罗伯特·斯特恩伯格那里选择一个定义，他现在是塔夫茨大学的院长，但他在耶鲁大学任教近30年。
I got up early this morning to pick up my grandma at the airport.
今天早上我起得很早去机场接我奶奶。
I asked my father to pick me up at the school gate at 6:30 so that we could visit Grandma together.
我让爸爸六点半在校门口接我，这样我们可以一起去看望奶奶。
"I think people like knowing that they're not alone even if they have to stay at home and they really try to pick out those who are similar to themselves in the photos," she said.
她说：“我认为，虽然人们必须呆在家里，但人们还是喜欢知道自己并不是孤单一人，并且他们真的喜欢试着在照片里找出来跟他们相似的人。”
What my children want to do after school is pick up a screen—any screen—and stare at it for hours.
然而，我的孩子们放学后想做的是拿起一个屏幕——任何屏幕——盯着它几个小时。
Green sends in reinforcements to pick them up at the water tower.
格林派出了增援去水塔接他们。
We’ll have a reception dinner for you tonight, and I’ll send someone to pick you up at 5:30.
今晚我们为您举行招待晚宴，晚上5：30我派车来接您。
But if winds continue to pick up at the same rate, hurricanes could become far more damaging by the middle of the century.
但是假如风持续的以一个相同的速率增长的话，那么在本世纪中叶，飓风将变得更具破坏力。
So you need to pick that up. It's at the Yale bookstore.
所以你需要开始读这本书，在耶鲁书店里有卖。
The DOE did not pick Hawaii at random to host the study.
美国能源部不是随机选取夏威夷来做研究的。
The other Malaysian crew member was said to have received instructions by satellite phone on where to rendezvous at sea to pick up the cargo.
另一位被捕者是马来西亚人。这位船员说自己是通过卫星电话收到指示，得知海上的约定取货地点。
The other Malaysian crew member was said to have received instructions by satellite phone on where to rendezvous at sea to pick up the cargo.
另一位被捕者是马来西亚人。这位船员说自己是通过卫星电话收到指示，得知海上的约定取货地点。
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