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arbitrarily + verb (decision/action)
The manager arbitrarily decided to cancel the project.
经理武断地决定取消项目。
任意地；随机地
先理解核心含义，再看它在真实句子里的用法。
任意地；随机地
in a way that is based on chance or personal choice rather than on a rule or plan
The manager arbitrarily decided to cancel the project.
经理武断地决定取消项目。
任意地；武断地。
In an arbitrary manner.
随机地
in a random manner
达到任意的程度。
To an arbitrary degree.
The manager arbitrarily assigned the tasks without considering our skills.
经理任意地分配任务，没有考虑我们的技能。
The students were told to pick a topic arbitrarily for their presentation.
学生们被要求任意选择一个演讲主题。
The rules were applied arbitrarily, causing confusion among the participants.
这些规则被任意应用，导致参与者感到困惑。
The manager arbitrarily decided to cancel the project.
经理武断地决定取消项目。
She arbitrarily changed the password without telling anyone.
她任意更改了密码，没有告诉任何人。
The number can be arbitrarily large.
这个数字可以任意大。
Not this
He made an arbitrarily decision.
Use this
He made an arbitrary decision.
错误地将副词'arbitrarily'用作形容词。'decision'是名词，需要形容词'arbitrary'来修饰，而不是副词。
Not this
She arbitrarily joined the club because she wanted to.
Use this
She voluntarily joined the club because she wanted to.
混淆了'arbitrarily'（任意地，武断地）与'voluntarily'（自愿地）。'arbitrarily'强调无理由或专横，而此处意图是表达自愿，故应用'voluntarily'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
任意挑选的；随机选定的
The sample was arbitrarily chosen from the list.
样本是从名单中任意挑选的。
任意分配的
Participants were arbitrarily assigned to two groups.
参与者被任意分配到两个组。
任意定义的；随意界定的
The boundaries of the region are arbitrarily defined.
该地区的边界是任意划定的。
任意决定；随心所欲地决定
The manager cannot arbitrarily decide who gets a raise.
经理不能任意决定谁加薪。
任意大的
The model can handle an arbitrarily large number of variables.
该模型可以处理任意多的变量。
任意设定的
The deadline was arbitrarily set without consulting the team.
截止日期是在未征求团队意见的情况下任意设定的。
Use arbitrarily naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
arbitrarily 是 arbitrary 的副词，意为“任意地、随机地”。想象一个人闭眼随手乱指，毫无理由和规则——“就这样，随便！”
语域：mixed 常见场景：academic writing、daily conversation arbitrarily 表示“随意地、随机地”时，通常可用于正式和非正式语境，属于中性偏正式的用词。日常对话中更自然的说法是 randomly，而书面表达中较常出现 arbitrarily。具体选择可依据句子的正式程度。
与 arbitrarily 末尾 /trɛrəli/ 押韵的词较少；contrarily 读 /kənˈtrɛrəli/ 时与它押韵。注意拼写以 -arily 结尾的词发音差异很大，如 necessarily /ˌnɛsəˈsɛrəli/、ordinarily /ˌɔːrdəˈnerəli/、primarily /praɪˈmerəli/、secondarily /ˌsekənˈderəli/、voluntarily /ˌvɑːlənˈterəli/，重读和元音都与 arbitrarily 不同，不能仅凭拼写类推。
Dictionary facts from ECDICT, WIKTIONARY.