1.表述：as like as two pees in a pod

释义：Said of two people who are very similar in interests, actions, or appearance.（一模一样）

例句：Betty and Jennifer are as alike as two peas in a pod, so it's no wonder people sometimes mistake them for sisters.

Betty和Jennifer长得一模一样，所以人们有时把她们错当成姐妹也就不足为奇了。

I had never met his brother before but I recognized him immediately because they’re as alike as two peas in a pod.

我以前从未见过他哥哥，但我立刻就认出了他，因为他们长得一模一样。

2. 表述：third wheel

释义：An unwanted, extra or unnecessary person. （多余的人，不需要的人，电灯泡）

例句：When Kelly invited me to go to the movies, I didn't know that her boyfriend would be joining us. I felt like a third wheel the entire night.

当凯丽邀请我去看电影时，我不知道她的男朋友会和我们一起去。我整个晚上都觉得自己像个电灯泡。

Whenever I go out with you guys I just feel like a fifth wheel.

每次我和你们出去，我都觉得自己是多余的。

You two go ahead, I do not want to be a third wheel.

你们两个去好了，我不想当电灯泡。