wistful/ˈwɪstfl; `wɪstfəl/ adjfull of or expressing sad or vague longing (esp for sth that is past or unobtainable) 发愁的, 渴望的(尤指过去的或不可得的事物) wistful eyes 露出渴求目光的眼睛 a wistful mood 愁苦的心情.
牛津英汉双解词典