1. Only their mother knows the twins apart.
   只有他们的母亲才能分清这对双胞胎。
2. The twins sleep in a bunk bed.
   这对孪生兄弟睡一张双层单人床。
3. Can you distinguish the twins apart?
   你能分辨这对双胞胎吗?
4. The concordance is around 20% for dizygotic twins.
   该一致性约为20％，异卵双胞胎。
5. There is no appreciable distinction between the twins.
   在这对孪生子之间看不出有什么明显的差别。
6. Siblings and dizygotic twins share only 50% of their segregating genes.
   同卵双生双胞胎和双卵双生双胞胎分享仅50%的基因。
7. The twins are so alike I can’t tell which is which.
   这一对双胞胎长得一模一样，我分不清谁是谁。
8. The twins are so alike that I can't tell which is which.
   这对双胞胎一模一样, 我分辨不出谁是谁。
9. Although they are twins, temperamentally they are as like as chalk to cheese.
   尽管他们是孪生儿，但性格却截然不同。
10. John Heder is a twin and he is probably best known as Napoleon Dynamite.
    约翰?海德一个双胞胎，他因为《大人物拿破仑》而出名。
11. These twins are very much alike.
    这对双胞胎非常相象。
12. Mary delivered Mrs. Rose of twins.
    玛丽为露丝太太接生了一对双胞胎。
13. The twin sisters have a happy disposition.
    这一对孪生姐妹有一种乐天的性格。
14. She is often mistaken for her twin sister.
    她常被人当作是她的孪生姐妹。
15. There are twin holes on each side of the instrument.
    这工具的两边各有一对孔眼。
16. Shorthand and typewriting have been described as the twin arts.
    速记和打字被说成是一对孪生技巧。
17. Both the twin brothers were born and bred in London.
    这对双胞胎兄弟是在伦敦长大的。
18. The twins had concurrent birthday.
    双胞胎生日在同一天。
19. The small mote on her forehead distinguishes her from her twin sister.
    她额头上的这个小斑点是她与其双胞胎妹妹的区别。
20. Tim, the thin twin tinsmith.
    Tim，瘦小的双胞胎洋铁匠。

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