He could picture the sudden decomposure of her firm placid features, to which a lifelong mastery over trifles had given an air of factitious authority.
他可以想象出她坚定平静的面容突然变得不平静，终生对琐事的掌握使她看起来像是一种人为的权威。
英语百科
Decomposure
Decomposure (a.k.a. Caleb Mueller) is a Canadian electronic music musician. To date, he has released two full-length albums on the Unschooled Label and two on his own Blank Squirrel label, as well as being featured on multiple compilations. Mueller is also a graphic and visual artist.