1
be a stranger to [sth/sb]
表示对某事物不熟悉。
He is a stranger to this city.
他对这个城市很陌生。
陌生人
先理解核心含义，再看它在真实句子里的用法。
陌生人
a person you do not know; someone who is neither a friend nor an acquaintance
He is a stranger to this city.
他对这个城市很陌生。
一个人不认识的人；既不是朋友也不是熟人的人。
A person whom one does not know; a person who is neither a friend nor an acquaintance.
与环境格格不入的人
anyone who does not belong in the environment in which they are found
外来者或外国人。
An outsider or foreigner.
陌生人；不认识的人
an individual that one is not acquainted with
I saw a stranger standing at the bus stop this morning.
今天早上我在公交车站看到一个陌生人。
Don't talk to strangers online.
不要在网上和陌生人说话。
He felt like a stranger in the new city.
他在新城市里觉得自己像个外人。
表示对某事物不熟悉。
He is a stranger to this city.
他对这个城市很陌生。
表示在某地是外来者。
She felt like a stranger in her own home.
她在自己家里感觉像个陌生人。
Not this
He is a stranger person.
Use this
He is a strange person.
错误原因：将名词 'stranger' 误用作形容词，因为中文 '陌生' 可兼作形容词和名词，但英语中 'stranger' 仅为名词，修饰名词应用形容词 'strange'。
Not this
I saw a lot of stranger on the street.
Use this
I saw a lot of strangers on the street.
错误原因：'stranger' 是可数名词，复数形式需加 -s，中文无复数变化导致遗漏。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
完全陌生的人
I wouldn't trust a complete stranger with my address.
我不会把自己的地址告诉一个完全陌生的人。
对……陌生的人
He is a stranger to this city.
他对这个城市很陌生。
陌生人危险
Parents teach their children about stranger danger.
父母教孩子防范陌生人危险。
陌生人焦虑
Babies often experience stranger anxiety around six months.
婴儿在六个月左右常经历陌生人焦虑。
彻底陌生的人
She married a perfect stranger.
她嫁给了一个完全陌生的人。
异乡人
I felt like a stranger in a strange land when I moved abroad.
移居国外时，我感觉自己像个异乡人。
对…陌生
He is a stranger to hard work.
他对艰苦的工作很陌生。
对…不陌生
She is no stranger to controversy.
她对争议并不陌生。
异乡客；身处陌生环境的人
After moving to Tokyo, I felt like a stranger in a strange land.
搬到东京后，我感觉自己像个异乡客。
你好，陌生人。
He walked into the room and someone shouted, 'Hello, stranger!'
他走进房间，有人喊道：‘你好，陌生人！’
我是在异乡的陌生人。
Moving to a new country, he felt like a stranger in a strange land.
搬到新国家时，他感觉自己像是在异乡的陌生人。
Use stranger naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
陌生人（stranger）就是 strange（奇怪的）人（-er）。
register: neutral; typical settings: 日常对话、书面叙述；note_zh: "stranger" 作为名词时语气中性，适用于大多数场合，既可用于日常对话也可用于正式叙述，无需特定语境限制。
Danger and ranger are true rhymes with stranger (stressed /eɪn.dʒər/). Passenger, messenger, and manager share the spelling -ger but have different stressed vowels (/æ/, /ɛ/, /æ/ respectively), so they only rhyme in the unstressed final syllable.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.