affectation

His British accent was clearly an affectation, as he had lived in Texas his whole life.

(Chinese) 他的英国口音显然是装出来的，因为他一辈子都住在德克萨斯州。

The young poet's constant use of obscure words felt like an unnecessary affectation.

(Chinese) 这位年轻诗人总是使用晦涩的词语，让人觉得是不必要的矫揉造作。