They marched out singly or in pairs.
他们一个一个地或成双成对地走出去。
Students worked in pairs on the project.
学生两人一组做这个项目。
He programmed his computer to compare the 1,431 possible combinations of pairs in this population.
他给他的计算机编了程来比较这些人中1431种可能的成对组合。
他们两个共卖30双鞋。
这些鸟成双成对地飞。
筷子都是成双的。
Sometimes the pupils work in pairs.
有时学生两人一组学习。
She knitted her son 5 pairs of socks.
她给儿子织了5双袜子。
它成对出售。
The teacher lets students read the text in pairs.
老师让学生两人一组读课文。
Astronomers suspect that pairs of planets also engage in this slingshot activity, leaving them in disturbed, elliptical orbits.
天文学家怀疑成对的行星也参与了这种弹弓活动，使它们处于不规则的椭圆轨道上。
The elderly gravitate there, shuffling in cheerful pairs along Marine Parade or jogging in slow motion past the Sea Gull Café, intent on some distant goal.
被吸引到那里的老人们，或是成对欢愉地沿着马林百列缓步慢行，或是不紧不慢地经过海鸥咖啡店，要去往远处的某个地方。
I placed an order with them for 500 pairs of shoes.
我向他们订购了500双鞋。
Looking at rising and setting star pairs is a good technique.
观察上升和下降的星对是一个很好的技巧。
Analysis by gel electrophoresis revealed slight differences in amino acid sequence of the enzymes of two of the four pairs.
经凝胶电泳分析，发现四对实验对象中有两对的酶的氨基酸序列略有差异。
It turned out that there were actually four times as many bird pairs or couples living in the stream edge habitat compared to the area away from the stream.
事实证明，生活在溪边栖息地的鸟对数量是远离溪边栖息地的四倍。
They cited a study presented earlier this year of 249 pairs of parents and their children in which twice as many children as parents wanted rules on what parents could share.
他们引用了今年早些时候的一项研究，这项研究面向249对父母及其孩子进行，其中希望对父母分享的内容进行规定的孩子数量是父母的两倍。
Unless current greenhouse gas emissions drop, 70 percent of king penguins—1.1 million breeding pairs—will be forced to relocate their breeding grounds, or face extinction by 2100.
除非目前的温室气体排放量下降，否则70%的帝企鹅——即110万对繁殖伴侣——将被迫迁移它们的繁殖地，或者它们会在2100年前濒临灭绝。
A brief rummage will provide several pairs of gloves.
稍许翻一下就会找到几副手套。
我有两套睡衣裤。
What insects have one pair of wings? What insects have two pairs of wings?
什么昆虫有一对翅膀，什么昆虫有二对翅膀？
Spiders have eight eyes, four pairs of legs, and can grow a new leg if they lose one.
蜘蛛有8只眼睛，4对腿，如果它们失去一条腿，还能再长出一条新的腿。
Radesky has studied the use of mobile phones and tablets at mealtimes by giving mother-child pairs a food-testing exercise.
雷德斯基通过对多对母子进行用餐测试实验，研究手机和平板电脑在用餐时的使用情况。
Some 10,000 pairs of the birds, called fulmars, a kind of Arctic seabird, make their nests on Devon Island, north of the Arctic Circle.
在北极圈以北的德文岛上大约有一万对鸟在那里筑巢，它们被称为管鼻鹱，是一种北极海鸟。
两人一组做练习。
How many pairs of socks does the woman take?
这位女士带了多少双袜子?
You shall work in pairs or groups to show the preview results.
你们要分组展示预习成果。
应用推荐