同卵双生

例句：

1. 1. They are expecting a set of twins soon.
   他们很快就要迎来一对双胞胎。
2. 2. The twins were born from the same egg and share the same mother.
   这对双胞胎是同一个卵子里出来的，共享同一个母亲。
3. 3. The twins have a close bond and often spend time together.
   这对双胞胎关系密切，经常一起度过时光。