n.

1. 外人；门外汉；局外人
   To an outsider this looks like an idyllic life.

   在局外人看来这好像是一种田园式的生活。

2. （比赛中）不大可能获胜的选手（或赛马）

n.

1. a person who does not belong to a particular group.
   ▸a person not accepted by or isolating themselves from society.
2. a competitor thought to have little chance of success.