v.游說；兜售；詳細檢查；細究
n.細查；論究；勸誘；民意調查
The party needs to canvass the uncommitted voters. 這個黨需要向未表明態(tài)度的選民游說拉票。
These days they're busy for canvass. 這些天他們在忙著做民意調查。
