双胞胎

First of all, the male sex longer, after a number of rounds, will enable the woman excited.

首先，如果双胞胎的别不同，那么他们肯定是异卵双胞胎。

The twins were winched into one helicopter and the mother into another before being flown to hospital in Cheltenham, where the twins died.

双胞胎被松上一架直升机，他们的母亲上了另一架飞往位于切尔滕纳姆的医院的飞机，在飞机到达医院之前这对儿双胞胎死亡了。。。

In a study of nineteen sets of twins who had been separated from birth, investigators found that in approximately two thirds of the sets there were no more significant differences than existed among unseparated pairs of twins.

在对从一出生就分离的19对双胞胎的研究中，研究者发现，其中约三分之二的双胞胎之间的差异与一起长大的双胞胎之间的差异一样不明显。

Para.4 In a study of nineteen sets of twins who had been separated from birth, investigators found that in approximately two thirds of the sets there were no more significant differences than existed among unseparated pairs of twins.

整句话的意思为：在对从一出生就分离的19对双胞胎的研究中，研究者发现其中约三分之二的双胞胎之间的差异与一起长大的双胞胎之间的差异一样不明显。

For this study, Waldron and her colleagues analyzed data gathered on two groups of Australian twins born between 1893-1964 (3,634 female and 1,880 male twins) and 1964-1971 (3,381 female and 2,748 male twins).

在这项研究中， Waldron 和他的同事分析了两组从澳大利亚来双胞胎数据，这些双胞胎于1893-1964年间（3634对女性和1880对男性双胞胎）和1964-1971年间（3381对女性和2748对男性双胞胎）出生。

The investigators studied 353 pairs of monozygotic twins and 246 pairs of dizygotic twins from the Australian Twin Registry, as well as 218 pairs of monozygotic twins and 134 pairs of dizygotic twins recruited in Canada and the U.S.

研究人员研究澳洲双胞胎登记处的353对同卵双胞胎和246对异卵双胞胎以及美国和加拿大招募的218对同卵双胞胎和134对异卵双胞胎。

Our subjects included a total of 228 twin/sibling pairs aged 12 to 18 (130 monozygotic twins, 68 dizygotic twins and 30 sibling pairs) were recruited from the middle schools.

本研究收集了228对，年龄为12到18岁，国高中之双胞胎或手足配对（包含130对同卵双胞胎，68对异卵双胞胎，和30对手足配对）。

The twin genetic investigation conducted by Sun-Chong WANG's cross-country research team (consisting of researchers from Canada, Sweden, Australia, and the US etc.) observed 114 pairs of monozygotic twins and 80 dizygotic twins.

由王孙崇带领的研究团队与加拿大、瑞典、澳大利亚、美国等研究人员合作，进行双胞胎基因研究，共分析114对同卵双胞胎与80对异卵双胞胎。

After adjustment for age and other clinical factors, the correlation coefficient for the percentage of dense tissue was 0.61 for monozygotic Australian pairs, 0.57 for monozygotic North American pairs, 0.25 for dizygotic Australian pairs, and 0.27 for dizygotic North American pairs.

在调整年龄和其它临床因素后，致密乳房组织的相关系数在澳洲同卵双胞胎为0.61，北美同卵双胞胎为0.57，澳洲异卵双胞胎为0.25，北美异卵双胞胎为0.27。

Given the playwright's obsession with twins – several of his plays, including The Comedy of Errors and Twelfth Night, feature them – it's interesting to observe that Shakespeare fathered them in real life.

双胞胎总是在这位剧作家的戏里发挥搅乱乾坤的作用——他的好几个戏，包括《错误的喜剧》《第十二夜》，都重点描绘了双胞胎——我们发现很有趣的是，莎士比亚在现实生活里也确实有一对双胞胎。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷