Because each index incurs extra data updating overhead, the goal should be to create a small number of indexes to cover as many queries as possible.
因为索引会带来额外的数据更新开销，所以应该争取创建少量索引来覆盖尽可能多的查询。
The result is that many people head into retirement needing a little extra income to cover expenses and provide an adequate lifestyle or to maintain their pre-retirement lifestyle.
其结果就是许多人觉得退休后需要一些额外的收入来支付日常费用并且提供一个适当的生活方式或者维持他们退休前的生活方式。
The extra items sold must make enough profit at least to cover the cost of the additional time spent in selling them.
出售额外的商品获得的收益至少要能抵补花费的额外的销售成本。
Universities have been told to cut back too, with already-stingy plans to cover 15,000 extra undergraduate places cut to just 10,000.
大学也被通知要削减人员，计划额外招收1.5万名大学生的数目已经很少了，但还是要缩减到1万名。
Universities have been told to cut back too, with already-stingy plans to cover 15, 000 extra undergraduate places cut to just 10, 000.
大学也被通知要削减人员，计划额外招收1.5万名大学生的数目已经很少了，但还是要缩减到1万名。
Suchen had left a check in the cottage to cover an extra month’s rent and a note apologizing for breaking the lease.
苏晨在小屋里留下一张多付了一个月租金的支票，还留下一张纸条，为自己提前退房道了歉。
She is already planning her baking schedule to cover all the extra baguettes needed for Colebrook’s moose festival in August.
现在，她已经在为八月的驼鹿节需要的长棍面包制定烘烤计划了。
You may also be charged extra for layout help, editing, design of a book cover, and for photos.
您可能还收取额外的布局，有助于实现，编辑，设计的书籍封面和照片。
All elements on the cover are hot foiled, the whole object rests on an extra produced stand made of stainless steel.
封面上的所有元素都热挫败，整个对象由一个额外的生产由不锈钢制成的支架上。
In addition, a team's wide midfielders block Chelsea's full-backs, their own full-backs should be free to either become an extra man in midfield or provide additional defensive cover.
另外，边前卫去拦截切尔西的边后卫时，他们自己的边后卫就可以不受干扰，应该要么成为中场的额外一人，要么提供附加的协防保护。
He has asked his customers for an extra EUR 5 billion to cover his costs, but getting agreement is proving difficult.
他已经请求他的客户额外支付50亿欧元以包住他的成本，但取得一致显得很困难。
Cover shrouding on busbar provides extra protection.
以保护盖遮蔽母线提供额外保护。
You can also rent out your own home to cover housing costs and earn extra travel money.
你也可以出租你的房子，获得的房租可以来付旅行的房费和其他旅行费用。
So we had to advertise again to replace some key members of the team; we were lucky that we just about managed to cover the extra costs within the budget.
那么我们不得不再次做广告来替换几个团队成员，我们很幸运只是在预算范围内支出额外的费用。
If your lens lacks screw threads, you need to be extra careful and remember to cover the lens whenever the camera isn't in use.
如果你的镜头上没有，那就需要特别小心，并且记得当不使用相机时要遮盖住镜头。
Certainly, Sir, but I'm afraid it will not cover the cost of the meal. Would you mind paying the extra in cash, please?
当然可以，先生，只是恐怕还不够，您介意剩下的用现金支付吗？
Should the buyer wish to have the protection of greater cover, he would either need to agree as such expressly with the seller or to make his own extra insurance arrangements.
如买方需要更高的保险险别，则需要与卖方明确地达成协议，或者自行作出额外的保险安排。
Still, to cover the cost of cellphones, textbooks, meals, and other necessities, we all needed extra money.
我们还需要一些钱，来支付手机、课本、三餐和其他生活必需品的费用。
Extra large body of bridge bears the whole main bearing foundation of structure of bridge, service life and security of the whole bridge of back cover quality relation of the foundation pit.
特大型桥梁的锚体或承台都是全桥的主要承重结构的基础，基坑的封底质量关系全桥的使用寿命和安全。
A high dive will make a swimmer go deeper upon entry and therefore, the swimmer will cover more vertical distance to get to the surface. Covering that extra distance costs time.
高度过高的出发跳水会导致入水过深，因此，游泳运动员到达水面的垂直距离会更长，滑过这段额外的距离也就更费时。
The extra people can cover the contingencies that you know are going to happen, such as when crises take people away from the workplace.
多余的人能够保证在意外发生时你知道将会发生什么，例如当危险发生时使人们离开工作场所。
In subchapter 1, we firstly study the responsibility limits of main insurances and extra insurances, which distinguish the differences of the cover scope and onus probandi of all kings of risks.
第一节首先研究主险和附加险的责任范围，分析各险种承保范围的大小与举证责任的不同；
In subchapter 1, we firstly study the responsibility limits of main insurances and extra insurances, which distinguish the differences of the cover scope and onus probandi of all kings of risks.
第一节首先研究主险和附加险的责任范围，分析各险种承保范围的大小与举证责任的不同；
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