acute mark

over a vowel () as over e in cafe 锐音符, 锐重音（标在元音上方的变音符号, 如cafe一字中e上方的 ）.

active, active service (US also active duty), actively, activeness, activist, activity, actor, actress, actual, actuality, actually, actuarial, actuary, actuate, acuity, acumen, acupuncture, acupuncturist, acute, acute angle, acutely, acuteness, AD, ad hoc, ad infinitum, ad lib, ad nauseam, ad-lib, adage, adagio, Adam, Adam's apple, adamant, adamantly, adapt, adapt oneself to, adapt to, adapt...to, adaptability, adaptable,