| 单词 | occur |
| 释义 | occur verbadverb | verb + occur | preposition adverb➤commonly, frequently, often, regularly, repeatedly常常／频繁／经常／定期／反复发生➤generally, normally, typically, usually通常发生；往往发生▸➤infrequently, rarely不常／难得发生➤occasionally, sometimes偶尔／有时发生▸➤randomly, sporadically不时／间或发生➤mainly, mostly, predominantly, primarily主要发生➤exclusively, only仅发生▸➤naturally自然发生◆these chemical changes occur naturally.这些化学变化是自然发生的。➤spontaneously自发地出现◆opportunities for learning occur spontaneously every day.学习的机会每天都会自然而然地出现。➤simultaneously, together同时／一起发生➤independently单独出现➤quickly, rapidly快速／迅速出现➤slowly慢慢发生verb + occur➤be likely to, tend to很可能／往往发生▸➤be unlikely to不可能发生preposition➤among在⋯中出现◆the problems that occur among people living together合居者中出现的各种问题➤in在⋯出现◆a significant improvement occurred in patients given the drug.服用该药的病人出现明显改善。occur /əkɜː(r)/ (-rr-) [intransitive] (not used in the progressive tenses, used with an adverb or preposition不用于进行时，与副词或介词连用) (rather formal) to exist in a place or be present as a part of sth存在于；出现在◆lemurs occur in the wild only in madagascar.狐猴仅存在于马达加斯加的野生环境中。◆sugar occurs naturally in fruit.水果天然含糖分。▸ occurrence /əkʌrəns; name əkɜːrəns/ noun [uncountable] ◆the document addresses the occurrence of arsenic in drinking water.该文件谈到要如何解决饮用水中出现砷的问题。occur /əkɜː(r)/ (-rr-) [intransitive] (formal) (especially of an unexpected event such as a crime or accident) to happen（尤指犯罪或事故等意外事件）发生，出现◆when exactly did the incident occur?事件发生的确切时间在什么时候？◆something unexpected occurred.发生了一件出乎意料的事。 ➡ see also occurrence → event 1 occur/əˈkɜ:(r) ||; əˈkɝ/verb [i] (occurring;occurred) 1. (formal 正式) to happen, especially in a way that has not been planned 发生（尤指偶然地）: ◇the accident occurred late last night. 那宗意外于昨天深夜发生。 ☞look at the note at happen. 参看happen的注释。 2. to exist or be found somewhere 存在；找得到: ◇the virus occurs more frequently in children. 这种病毒更经常存在于儿童身上。 3. occur to sb (used about an idea or a thought) to come into your mind （指主意、想法）（指某人）想起，想到: ◇it never occurred to john that his wife might be unhappy. 约翰从没有想到他的妻子可能会不快活。 occursee ⇨ exist 1 ⇨ happen 1 oc·cur /ə`kɜ; əˈkɜː/v [i] -rred, -rringformal 【正式】 1. to happen, especially without being planned first ［尤指意外的事件］发生:◇major earthquakes like this occur very rarely. 像这样的大地震很少发生。 2. to exist or be present in a particular place or group ［在某特定地方或社群］存在; 出现:◇+ in/among the disease occurs mainly in young children. 这种病主要出现在幼儿身上。occur to sbto come into your mind 被想起:◇did it never occur to you to phone? 你从没想过要打电话吗？ ☞ occur |
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