You'll want to be sure to always return null if no match occurs, so that entity resolution will occur normally in non-special cases.

Measurement inconsistency arises from a variety of causes, most of which occur only occasionally, if at all, in short-term or experimental studies but are almost inevitable in long-term studies.

其中大多数即使出现，也只是在短期或实验室中偶然出现，但是在长期实验中不可避免。

With rapid development of high-tech, there occur occasionally cases of encroachment on the rights in the information field. In this regard collecting evidences of encroachments is of vital importance in settlement of any future dispute arising therefrom.

随着高科技的飞速发展，在信息领域中的侵权行为时有发生，所以注重对这些侵权行为的证据收集，对今后纠纷的解决都起着至关重要的作用。

Mine shaft hoist system accidents occur occasionally, causing casualties, while also caused damage of the equipment, the duration of the delay or interruption of production, seriously affected the normal conduct of the mine production activities.

矿山竖井提升系统事故时有发生，造成人员伤亡的同时，也造成了设备的损毁、工期的延误或生产的中断，严重影响了矿山生产活动的正常进行。

With the innovation capability of global banking industry enhancing, financial derivatives are coming one after another, the factors threatening banking stability are becoming more complex, bank failures incidents occur occasionally.

随着全球银行业创新能力的不断增强，金融衍生产品层出不穷，威胁银行稳定发展的因素日趋错综复杂，银行破产倒闭事件时有发生。

The incontrollable accidents occur occasionally during demolishing the tower buildings, such as chimney and water tower.

在烟囱、水塔类等高细建筑物的拆除爆破中，失控事故偶有发生。

We have known for a long time that mutations occur occasionally in each of us, but have had to guess exactly how often.

我们早就解到我们每个人会偶然产生突变，但是并不了解确切的发生几率（只好去猜）。

Recent years, the legal disputes, due to the damages caused by the thrown objects off different kinds of structures, occur occasionally.

近年来，因建筑物抛掷物而引发的法律纠纷不断发生。

In the blossom boll stage, the average wind speed is low, and the disastrous strong winds occur occasionally;

花铃期平均风速最小，偶有灾害性大风；

Being lack of scientific risk assessment tools and scientific risk management system, the safety accidents occur occasionally in the process of city runnel construction.

由于缺乏科学风险评估工具和科学的风险管理体系，在现有城市隧道建设过程中，安全事故时有发生。

China is a major coal producer, the coal mine accidents and even some major and serious accidents also occur occasionally.

虽然我国是一个产煤大国，但是矿井事故甚至一些重大、特大事故还时有发生。

Vertical transmission of hepatitis B virus ( HBV) can occur occasionally despite vaccination of the child.

乙型肝炎病毒的垂直传播可能偶发于接种了乙肝疫苗的孩子中。

She has been hawking them at trade shows , particularly ones devoted to infection-control products.

她一直在各种展销会上推销这些领带, 特别是面向感染控制产品的展销会.

Inside the Grand Theater, there are five rehearsal halls that could be as dealers rooms.

大剧院共有五个排练厅,可用于道具展销.

This plane is bought from a commodities fair.

这个飞机是从展销会上买回来的.

We're also spending less on trade shows andand spending more online.

我们也在贸易展销会上投入更少并且在线上模式投入更多.

I bought several cane products at the commodities fair.

我从展销会上买了好几件藤器.

At the same time, the satellites are laying out their wares.

与此同期, 卫星们摊开了它们的展销铺子.

At the food sales exhibition, there are a lot of delicacies loved by all.

食品展销会上有很多众所喜爱品尝之佳品.

Graphic design and printing: sample, picture album, package, bag, poster, color page DM and instruction.

平面设计印刷: 样本 、 画册 、 包装 、 包袋 、 海报 、 彩页DM、说明书.

Where possible, damage that does occur should be readily detectable and accessible for inspection and repair.

如有可能，出现的损坏应能及时的发现并便于检查和修复。