New Words：

twins [twɪnz] 孪生儿之一；双胞胎之一
toboggan [təˈbɒɡən] n.长雪橇;平底长雪橇

Sample Sentences：

Jason and Andy are twins.
I can never tell the difference between the twins.
The twins are so alike, it's difficult to tell the difference.

alike [əˈlaɪk] adj. 相像;十分相似

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