英 [əˈkʌrəns] 美 [əˈkɜːrəns]
n. 发生的事，事件；发生，出现（尤指意外且令人不快的事）
[ 复数 occurrences ][1]
co-occurrence 共现 ; 同现 ; 共现关系 ; 出现
loss occurrence 损失发生
random occurrence [计] 随机出现 ; [数] 随机事件 ; 随机发生
probability of occurrence [数] 事件概率 ; 发生概率 ; 问题发生频率 ; 事故概率
abnormal occurrence 异常现象 ; 异常事件 ; 异常产状
ingressive occurrence 海侵产状
frequency of occurrence [统计] 出现次数 ; 出现频次 ; [统计] 出现频率 ; 发生频率
Occurrence Basis 事故发生基础 ; 期内发生式 ; 以发生为基础 ; 事故发生制
Occurrence and Preparation of Silicon 硅的存在和制备[1]
Vandalism used to be a rare occurrence here. 过去这里很少发生故意破坏公物的事。
Complaints seemed to be an everyday occurrence. 投诉似乎成了天天发生的事。
One of them is a word counter, which counts for certain word occurrence in several files. 其中之一是单词计数器，它统计某一单词在几个文件中出现的次数。
This chance occurrence furnished her instantly with a plan worth all her laboured tests combined. 这一偶然的事件使她立即想到了一个计划，比她费尽心机想的那些测验方法合到一起还强。
Satellites have extended the power of communications to report events at the instant of occurrence. 卫星提升通讯的能力，使其可以在事件发生时立即报告。
The occurrence of these eye movements provides evidence that the moving pattern is perceived at some level by the newborn. 这些眼部运动的发生为新生儿在一定程度上感知到运动模式提供了证据。
Yet Rampino and others question one of the traditionalists' basic assumption: the periodic occurrence of glaciation throughout Earth's history. 然而，兰皮诺和其他人对传统主义者的一个基本假设提出了质疑：在整个地球历史中，冰川期是周期性发生的。
International interest in the therapeutic qualities of the Mediterranean diet began back in the late 1950s, when medical researchers started to link the occurrence of heart disease with diet. 早在20世纪50年代末，当医学研究人员开始将心脏病的发生与饮食联系起来的时候，国际上就开始对地中海饮食的治疗效果产生了兴趣。
Domestic violence is a regular occurrence in some families. 在某些家庭中，家庭暴力是常事。
The greatest occurrence of coronary heart disease is in those over 65. 冠心病的最高发病率在65岁以上的人群中。
The problem is that the compound has mixed effects in the brain, a not unusual occurrence with psychoactive drugs. 问题在于，这种化合物对大脑有混合作用，这种情况在服用精神药物时并不少见。
Using high-speed photography, scientists have determined that there are two steps to the occurrence of lightning from a cloud to the ground. 利用高速摄影技术，科学家们已经确定了闪电从云层到达地面有两个步骤。
Whales and dolphins have been found with hind limbs; this rare occurrence is due to the reemergence of a trait they inherited from their terrestrial ancestors. 发现鲸和海豚身上有后肢；这种稀有的现象是由于它们在陆地上的祖先身上的特征再次被遗传。
Species extinction, deforestation, damming of rivers, occurrence of floods, the depletion of ozone, the degradation of ocean systems and many other areas are all experiencing acceleration. 物种灭绝、森林砍伐、河流筑坝、洪水、臭氧层损耗、海洋系统恶化和许多其他变化都在加速发生。
Under the treatments, the occurrence time of septoria leaf spot was delayed 15 days. 经治疗后，黄斑病的发生时间推迟了15天。
It explained the basic reason for protanopia and deuteranopia occurrence with the equilibrium theories. 它用平衡理论解释了发生红色盲和绿色盲的根本原因。
A matter of repeated occurrence like this will not astonish people. 这样司空见惯的事，不会使人吃惊。
The occurrence of pargasite reflects the participation of the upper mantle fluids and the metasomatism. 角闪石的出现反映上地幔流体的渗透及交代作用。
The occurrence of coexisting corrensite and allevardite in the same reservoir sample is firstly found and reported in the world. 世界上首次发现并报道了在同一储层样品中同时存在的堇青石和钠板石的存在。
This is a frequent occurrence. 这是经常出现的情况。
They are closer to a daily occurrence. 它们接近于一个日常的事件。
It will be an unprecedented occurrence. 这将是史无前例的壮举。
Such incident is an everyday occurrence. 这种事是家常便饭。
The burnings have become a nightly occurrence. 这些焚车行为已经成为每夜都会发生的事件。
It is more a made-up story than a real occurrence. 那是杜撰的故事，而不是真实发生的事情。
Targets are always spelled out on first occurrence. 目标总是在第一次出现时被清楚地说明。
If this is a first or second time occurrence, let it go. 如果这是第一次或者第二次发生，不要理会。
Parse event occurrence data and take appropriate action. 解析事件发生数据并采取适当的措施。
Each occurrence handles one modification to the document. 每次出现处理文档的一个修改。[1]