to cover with a hardened layerfrost riming the doorknob
frost riming the doorknob
caking, crusting, encrusting(also incrusting)
besmearing, coating, smearing, spreadingcovering, daubingcoagulating, congealing, hardening
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。