Ultrasound showed she was expecting twins.
超声波扫描显示她怀了双胞胎。
While the twins played cards, Leona sat reading.
那对双胞胎玩牌的时候，利昂娜坐着看书。
She suggested several ideas to help Laura amuse the twins.
她给劳拉出了一些主意，好逗这对双胞胎开心。
You're expecting twins? Well, you never did do anything by halves.
你想生对双胞胎？唔，你做事倒从来不会只做一半。
My twins are 20 years old this year.
我的双胞胎孩子今年也20岁了。
"It's very clear when you look at twins that much of what they share is hardwired," she says.
“当你观察双胞胎时，你会发现很显然他们共有的很多东西都是与生俱来的。”她说。
The twins, who had finished their homework, were allowed to play badminton on the playground.
这对双胞胎完成了作业，得到准许可以在操场上打羽毛球。
They want to know why many identical twins make similar choices even when they don't live near each other.
他们好奇为什么许多同卵双胞胎即使不住在一起也会做出相似的选择。
Because identical twins come from a single fertilized egg that splits into two, they share virtually the same genetic code.
由于同卵双胞胎来自于一个分裂成两个的受精卵，他们实际上共享相同的遗传密码。
Geneticist Danielle Reed has worked with many twins over the years and thought deeply about what twin studies have taught us.
遗传学家丹妮尔·里德多年来对许多双胞胎进行研究，深入思考了研究双胞胎教会了我们什么。
Over two decades 137 sets of twins eventually visited Thomas Bouchard's lab in what became known as the Minnesota Study of Twins Reared Apart.
在20多年的时间里，最终有137对双胞胎拜访了托马斯·布沙尔的实验室，这就是后来著名的“明尼苏达双胞胎实验”。
To biomedical researchers all over the world, twins offer a precious opportunity to untangle the influence of genes and the environment—of nature and nurture.
对世界各地的生物医学研究人员来说，双胞胎提供了一个宝贵的机会，来解开基因和环境——也就是先天和后天的影响之谜。
But twin studies took a surprising twist in the 1980s, with the arrival of studies into identical twins who had been separated at birth and reunited as adults.
但在20世纪80年代，对出生时被分开而成年后重新团聚的同卵双胞胎进行研究时，双胞胎研究出现了令人惊讶的转折。
If identical twins are more similar to each other with respect to an ailment than fraternal twins are, then vulnerability to the disease must be rooted at least in part in heredity.
如果同卵双胞胎彼此在疾病方面比异卵双胞胎更相似，那么这种疾病的易感性至少在一定程度上是由遗传造成的。
We look like twins, but we are completely different.
我们看起来像双胞胎，但实际上我们完全不同。
The twins didn't go to bed until they finished their homework last night.
这对双胞胎昨晚直到做完作业才上床睡觉。
The twins were helping their parents make zongzi for the Dragon Boat Festival.
这对双胞胎正在帮他们的父母包端午节的粽子。
"How I wish I could do something different today," said the twins with one voice.
“我多么希望我今天能做些不一样的事情，”双胞胎异口同声地说。
The twins are so alike that even their father finds it hard to tell them from each other.
这对双胞胎长得太像了，连他们的父亲都很难把他们区分开来。
Nine-year-old twins Harry and Hannah DeVrieze have painted hundreds of rocks with their parents.
9岁的双胞胎哈里·德夫里泽和汉娜·德夫里泽已经和父母一起绘制了数百块石头。
The twins were filled with excitement as they thought of the surprise they were planning for Mother's Day.
想到为母亲节准备的惊喜，这对双胞胎就兴奋不已。
When scientist Thomas Bouchard Jr. invited the Jim twins to his lab, people there found it very hard to tell them apart.
当科学家小托马斯·布沙尔邀请吉姆双胞胎到他的实验室时，工作人员很难将兄弟俩区分开来。
Many scientists once believed that physical similarities between identical twins are genetic, while their personalities, intelligence and other differences between them are an effect of their environment.
许多科学家曾经认为，同卵双胞胎在外貌上的相似是由基因决定的，而他们之间的性格、智力和其他差异则是受到环境的影响。
Reed's research shows that though nothing can truly change our DNA, environmental differences that a child experiences before birth and in their first year can sometimes affect the way the DNA behaves, making even identical twins into very different people.
里德的研究表明，虽然没有什么能真正改变我们的 DNA，但孩子在出生前和出生后第一年所经历的环境差异有时能够影响 DNA 的表现方式，甚至使同卵双胞胎变成两个很不同的人。
但我们就要有双胞胎了。
萨莉和我是双胞胎。
On weekends, the couple took turns to look after the twins.
在周末，这对夫妇轮流照看双胞胎。
They devoted all their time to taking care of the twins.
他们所有的时间都花在照顾这对双胞胎身上了。
My 12-year-old son and one of my nine-year-old twins are big fruit eaters.
我12岁的儿子，还有我其中一个9岁的双胞胎都特别喜欢水果。
My 12-year-old son and one of my nine-year-old twins are big fruit eaters.
我12岁的儿子，还有我其中一个9岁的双胞胎都特别喜欢水果。
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