narrow down [ˈnærəu daun]

以下由轻松背单词网站提供

附加级

减少，限制，缩小，变窄

It was rather hairy driving down that narrow road in the darkness. 黑夜在那条窄道上开车真可怕。
I cannot narrow down the rules for this game. 我不能限制这场比赛的规则。