sighlessadj.sigh的变形：sigh[sai]vi.叹气，叹息：to sigh with helplessness无奈地叹息发出叹息般的声音；(风等)呼啸，悲鸣：sighing wind呼呼的大风悲叹，痛惜：to sigh over something为某事而悲叹想念；渴望：to sigh for hometown想念家乡vt.叹息着表示；悲叹，痛惜：to sigh one's youth lost early悲叹青春早逝在叹声中浪费(或虚度)：to sigh away one's days在