pertinacious

His style of argument in meetings is not so much aggressive as pertinacious .(他在会上的辩论风格应该说是坚持己见，而不能说是咄咄逼人。)

Whatever I did, that idea would bother me: it was so tiresomely pertinacious that I resolved on requesting leave to go to Wuthering Heights, and assist in the last duties to the dead.(不论我在干什么事，这个疑问总使我烦恼。它是那样执拗地纠缠着我，以致我决定请假到呼啸山庄去，帮着料理后事。)

It can be a very loose film, dust like in appearance and texture that can be readily wiped off to a tight pertinacious film that requires scraping with a sharp instrument to be removed.(相对于需要用尖锐的工具刮除的紧固的膜来说，它是非常松散的膜，外表和结果上看来象灰尘，很容易擦去。)

Whenever they encounter something, they manage to see it through, strive forward toward it and deal with it confidently with indomitable will and pertinacious perseverance.(无论他们遇到什么，他们将设法正视它，努力朝它前进，然后依靠顽强的意志和坚强的毅力自信地解决它。)

Objective To study the etiology of pertinacious chronic cough in children.(目的探讨小儿难治性慢性咳嗽的病因。)