Anonymous Does it matter? Probably not very much, but 'specialise in' is still the normal collocation.
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AnonymousDoes it matter?Probably not very much, but 'specialise in' is still the normal collocation.
AnonymousWe settled on saying 'in' when it refers to a topic and 'at' when referring to the act of doing.I don't see that as realistic, but simply an attempt at a prescription. 'At' still sounds wrong in your sentence.