troddenv.
英 'trɒdn | 美 'trɑdn
中文v. 践踏；行走（tread的过去分词）
词根词源
trodden (adj.)"that has been stepped on," 1540s, past participle adjective from tread (v.). The past participle was altered from Middle English treden under influence of Middle English past participles such as stolen from steal.
关键词