英式:[ˌɒptɪˈmɪstɪkli]
美式:[ˌɒptɪˈmɪstɪkli]

adv.乐观地

用作副词 (adv.)

But his talks end optimistically, thanks to his observations in the wild. 但是他乐观地结束他的报告,这要多亏他在野外的观察。