function as
collocation充当；起……的作用
In this team, she functions as the project manager.
在这个团队中，她充当项目经理。
起作用；运转；工作
functioning — present participle of function
先理解核心含义，再看它在真实句子里的用法。
起作用；运转；工作
To work or operate; to serve a particular purpose.
The machine functions perfectly after the repair.
这台机器修理后运行正常。
具有功能
To have a function.
执行功能；起作用
To carry out a function; to be in action.
function
Base
原形
functions
3rd person
第三人称单数
functioning
-ing
现在分词
functioned
Past
过去式
functioned
Past participle
过去分词
The machine functions smoothly.
这台机器运转平稳。
He functioned as the team leader last year.
他去年担任了团队领导。
The system has functioned without errors for months.
该系统已无错误运行数月。
动词，意为起作用或行使职责
Her brain functions best in the morning.
她的大脑在早上功能最佳。
The software functions without any glitches.
该软件运行毫无故障。
Choose the next layer that will help you use functioning with more confidence.
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Missing: Usage patterns
Complete this area with usage patterns.
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充当；起……的作用
In this team, she functions as the project manager.
在这个团队中，她充当项目经理。
正常运转
The coffee machine is finally functioning properly.
咖啡机终于正常运转了。
有效运作
A business cannot function effectively without clear communication.
没有清晰的沟通，企业就无法有效运作。
停止运转
If you unplug the device, it will cease to function.
如果拔掉设备电源，它就会停止运转。
满负荷运转；竭尽全力地工作
The team is finally functioning on all cylinders after months of preparation.
经过几个月的准备，团队终于满负荷运转起来了。
像上了油的机器一样运转顺畅；高效有序地运作
The hospital functioned like a well-oiled machine during the emergency.
医院在紧急情况期间像上了油的机器一样运转顺畅。
在精力耗尽时仍继续运转；强撑工作
I've been functioning on empty for days; I need a break.
我已经强撑工作好几天了，需要休息一下。
Use functioning naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 function 拆成 fun + ction：机器正常“运转”才好玩（fun），运转就是“起作用”。
语域：mixed 常见场景：技术文档、正式报告、日常对话 function 作动词表示“起作用、运转”时，多用于正式或技术语境；在日常口语中，通常用 work 更自然。
通常用作不及物动词，后接介词as表示‘起…作用’或‘发挥功能’。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.