1(of an extra part of a machine) able to be fastened on with a bolt or catch.

1. 1.1 Denoting a feature, service, etc. that has been or can be added to an existing arrangement.
   （可以）附加的
   there's no obligation to buy any type of bolt-on insurance product with a personal loan

   没有义务用个人贷款购买任何形式的附加保险产品。

   Example sentencesExamples

   • Any download data consumed in excess of the bolt-on allowance will be charged at £3 per MB.
   • There has been growing recognition that security must be embedded into the fabric of applications during development, rather than as an afterthought left to security bolt-on features or third-party tools.
   • Industry specialists also advise clients to be sceptical about expensive and unnecessary products which lenders and brokers may try to sell you as bolt-on products to the basic mortgage loan.
   • The team also produces bespoke bolt-on software for designers.
   • Such bolt-on deals are aimed at filling holes in a company's core businesses.
   • A flagging enterprise may survive and prosper as a bolt-on acquisition or benefit from the economies of scale in a larger grouping.
   • There will an optional bolt-on digital audio specification, allowing the standard to be used in multimedia kit.
   • Sport is not a bolt-on extra in the lives of champions, sport is everything to them and victory the aim of their every waking moment.
   • Extracurricular activities tend to be a very important and integral part of what they have to offer, rather than a bolt-on extra.
   • The last six years have shown conclusively that the strategy of remaining independent and supplementing organic growth with smaller bolt-on acquisitions has failed.
   • We had to spend $50 million a year on servers, networking equipment, EDI, XML, and bolt-on applications to develop programs uniquely designed for certain industries.
   • The software is provided to fulfil a specific independent trading function for financial market firms or as a bolt-on component to third-party software.
   • Dental care and travel insurance might only be available as bolt-on extras rather than automatically included, even for fully comprehensive deals.
   • Animation courses in universities and art schools were traditionally bolt-on elements to illustration degrees and usually very specialised in nature.

1A bolt-on part of a machine.

1. 1.1 A bolt-on feature, service, etc.
   some network operators offer bolt-ons to help cut the cost of data usage abroad

   Example sentencesExamples

   • If you want new features, generally you have to wait for them to implement them (okay, there are some plug-ins and bolt-ons).
   • The market barely reacted to the announcement of the two bolt-ons, with the share price taking a slight dip by the end of the week.
   • He will probably not treat aesthetics as a bolt-on, recognising that it's a must-have in the current market.
   • To access the technology runners will need to have handset with a GPS network, which is already fitted on many new mobiles or can be purchased as a bolt-on for as little as £40.
   • People are finding lots of ways of making this an integral part of the curriculum, not seeing it as a bolt-on.
   • Public health should, I believe, be at the core of the work of all healthcare professionals it should not be seen simply as a bolt-on.
   • At the client level XP is Win2k with bolt-ons, many of them naggy pop-ups.
   • The plot is pretty much a bolt-on, of course, and you won't get up from this book and change the world, but it's certainly a nice bit of summer reading.
   • Another way to ensure that security measures are adopted across the organization is to make sure that the technology is more than just a bolt-on, that it is tightly integrated with existing desktop systems.
   • More students are taking language courses, particularly in newly popular subjects such as Spanish - but it is now often a subsidiary bolt-on to another degree subject.