在可行的地方有一些海水淡化厂，但它们的运营成本很高，并且需要经常维修。
Some desalination plants exist where feasible, but they are costly to run and can need constant repair.
不要拥有需要经常维修的玩具。
其中有很多电子管和机械零件，需要经常维修。
Their many vacuum tubes and mechanical parts required constant maintenance.
尽管相对贵一些，但是这个发动机效率更高，而且不需要经常维修。 【参考答案】。
Even though relatively costly, the engine is highly efficient and infrequently needs servicing.
然而您的手机或许因为外观太丑，或许因为信号太差，或许因为待机时间太短，或许因为经常维修……这些都让您觉得美中不足却无法选择！
However, your phone may look ugly because, perhaps because of poor signal, perhaps because the standby time is too short, perhaps because of frequent maintenance!
那台录音机经常出毛病，不得不维修，因为那需要批准的，我最终发现了施密兹夫人在做什么。
It kept breaking down and having to be repaired, and because that required permission, I finally found out what Fraus Schmitz was doing.
轮渡业管理不善，船只经常超载，并且维修很差。
The industry is poorly regulated, and often the boats are overcrowded and in disrepair.
实际上航天飞机发射成功的次数要比宣传中的少。操纵维修保养复杂，也不像计划中的那么廉价，经常导致无法正常工作，使得在太空中做一些性价比更高的事情的希望消失了。
And there was, in fact, less success than advertised.They were too cantankerous to fly as often or as inexpensively as planned, so the hope of doing things more cheaply in space evaporated.
保险协议的条款各有不同(经常是一大堆难懂的条文)，但通常都会承诺在1到4年内，可以维修或更换出毛病的产品。
The terms of these deals vary (and there is often a great deal of fine print), but they usually promise to repair or replace a faulty device for between one and four years.
罗兰印刷机维修和保养是关键的，现在公司的生产线上经常会出现一些问题。
Roland printer repair and maintenance is the key, and now the company's production line problems often occur.
你对你的助听器的可靠程度(是否经常需要维修)有多满意？
How pleased are you with the dependability (how often they need repairs) of your hearing AIDS?
经常性的维修保养工作费用较低。
汽车发动机气门间隙调整是汽车使用和维修中经常进行的一项重要作业。
It is an important work in automobile service and repair to adjust the valve clearance of engine.
但还是经常有表友的爱表出现故障需要维修。
However, there is often a table of the love of the table you need to repair the breakdown of the table.
这些机器需要经常保养维修。
柜台工作人员要经常迅速例如，在等待谁采取的维修工作时间力学得到零件。
Counter workers must frequently work rapidly for example, when waiting on mechanics who have taken time from repair work to get parts.
统计方法在主动性产品维修中起到了不可或缺的作用。 相关内容经常见诸于各大著名工程师及学术专家的著作中。
Statistical methodsplay an important part in proactive product servicing. Such work, as always, isconducted in collaboration with knowledgeable engineers and subject matterexperts.
各任务间经常发生维修资源冲突的状况。
However resource conflicts often happen in such multitask situation.
东京电力公司核电站管理部门负责人小林久晃（Teruaki Kobayashi）说，由于福岛第一核电站反应堆更陈旧，比新建核电站需要更经常的维修和检查。
Teruaki Kobayashi, head of Tepco's nuclear-plant-management section, said that since 'Fukushima Daiichi has older reactors, it requires more frequent repairs and checks than new nuclear plants.
在道路的养护维修期间，高速公路作业区由于经常需要关闭车道而形成道路通行的瓶颈，影响着高速公路运行的平稳性和安全性。
Because expressway work zones for maintenance often need lane closure, it will result in road capacity bottleneck and impact the stabilization and safety of expressway operation.
冷气机要定期维修保养，隔尘网要经常清洗。
Keep air-conditioners well maintained and wash air filters frequently.
这些机器需要经常保养维修。
The roof of the ancient temple caved in because of bad maintenance.
并就经常出现的加电故障及其检测结果进行了分析，提出了用直接连接替换插头插座的改进方案，此维修方案取得了预期的效果。
The electrical source fault and testing result is analyzed, the improving method for replacing plug or socket directly is presented, and then, preferable maintaining r...
PC - 2是有线电视安装和维修技术人员经常使用的设备。
The PC-2 is popular with CATV installers and service technicians who align and test the return path.
妇女像船：他们经常需要维修和关注，他们花费很多钱。
Women are like boats: they require constant maintenance and attention, and they cost a lot of money.
维修与更换电池也是建筑运营商关切的一个问题，而这一产品也降低了经常更换电池的需求。
Maintenance related to battery replacement is a concern for building operators, and this unit reduces the need for frequent battery changes.
维修中对设备零部件的更换，使其经常处于局部更新状态，按单元的故障率模型无法计算具有这种特点设备的剩余寿命。
The replacement of some equipment's components makes it in partial update state. The equipment's residual life with such characteristic cannot be calculated by using unit failure rate model.
维修中对设备零部件的更换，使其经常处于局部更新状态，按单元的故障率模型无法计算具有这种特点设备的剩余寿命。
The replacement of some equipment's components makes it in partial update state. The equipment's residual life with such characteristic cannot be calculated by using unit failure rate model.
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