adv. 完美地;理想地;完全地;無(wú)瑕疵地;
?? per全部+fect做+ ly ...地 → perfect全部做完=完美的+ly...地 → 完美地
"The witnesses were each perfectly certain of what they said."
證人們個(gè)個(gè)對(duì)自己所說(shuō)的話十分肯定.
近義:ideally, optimally, pretty, quite, very, completely
反義:lamely, defectively, faultily