free of charge
collocation免费
The museum is free of charge on Sundays.
博物馆周日免费。
自由的；不受约束的
freer — comparative of free
先理解核心含义，再看它在真实句子里的用法。
自由的；不受约束的
Not constrained; able to act or be done as one wishes.
The movie tickets are free for students.
电影票对学生免费。
不受限制的。
Unconstrained.
无需支付即可获得的。
Obtainable without any payment.
没有；不含(指定内容)；免除；清除；解放。
Without; not containing (what is specified); exempt; clear; liberated.
特权的或个体的；专有的。
Privileged or individual; proprietary.
We got a free upgrade to first class.
我们免费升级到头等舱。
The app offers a free trial for one month.
这个应用提供一个月免费试用。
Choose the next layer that will help you use freer with more confidence.
Recommended next
Missing: Usage patterns
Complete this area with usage patterns.
Includes Common mistakes & Confusing words
See typical errors learners make and confusing words to avoid.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
免费
The museum is free of charge on Sundays.
博物馆周日免费。
空闲时间
I like to read in my free time.
我喜欢在空闲时间读书。
言论自由
The right to free speech is protected by law.
言论自由的权利受法律保护。
随意；别客气
Feel free to ask any questions.
请随意提问。
摆脱了…的；没有…的
The city is now free from pollution.
这座城市现在没有污染了。
释放；使获得自由
The bird was set free from its cage.
那只鸟被从笼子里放了出来。
轻松自在的；无拘无束的
The atmosphere in the office is free and easy.
办公室里的气氛轻松自在。
免费的；不收取费用的
Children under five are free of charge.
五岁以下儿童免费。
像鸟儿一样自由自在；无牵无挂
Once I handed in my thesis, I felt free as a bird.
交完论文后，我觉得无牵无挂，像鸟儿一样自由。
终于自由了！终于自由了！感谢全能的上帝，我们终于自由了！（出自马丁·路德·金的演讲《我有一个梦想》）
After months of negotiation, the hostages were finally free.
经过数月的谈判，人质终于自由了。
真理必使你自由。（出自《圣经·约翰福音》8:32）
Education is the key that sets people free from poverty.
教育是让人们摆脱贫困的关键。
发长 /iː/ 音 (如 see, free)
Use freer naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：字母 f 像展翅，两个 e 像眼睛，鸟儿自由（free）飞翔，看风景免费。
语域：neutral 常见场景：日常对话、新闻与公共讨论、正式写作 free 表示“不受限制的、自由的”时，语气中性；通常用于谈论自由、权利、选择或行动不受约束的场合，日常对话和正式书面语中都比较常见。
形容词，后可接from/of引出所免于的事物，或接不定式表示自由做某事。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.