n. anyone who does not belong in the environment in which they are found
n. an individual that one is not acquainted with
n. 陌生人, 门外汉
[法] 局外人, 非当事人, 第三者
1. I saw a stranger in the park yesterday.
我昨天在公园里看见一个陌生人。
2. It's important to be careful when talking to a stranger.
和陌生人交谈时，要小心是很重要的。
3. The stranger asked me for directions to the nearest bus station.
那个陌生人问我最近的公交车站怎么走。