The rate at which hair grows can be agonisingly slow.头发生长的速度可能极其缓慢。...

adv.烦恼地，苦闷地...

agonisingly的音标：agonisingly的英式发音音标为：['æɡənaɪzɪŋlɪ]agonisingly的美式发音音标为：['æɡənaɪzɪŋlɪ]...