swan英音[sw?n]美音[swɑn]【中文释义】n.天鹅；诗人 ， 歌手；vi.游荡；闲逛；随意旅行 。
【英文释义】
Noun:
stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult
Verb:
to declare or affirm solemnly and formally as true；
"Before God I swear I am innocent"
move a