dividing line

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++diˈviding ˌline noun [countable usually singular]  the difference between two similar things 分界线，界限dividing line between What’s the dividing line between normal drinking and addiction? 正常喝酒和酗酒的界限如何划分？

Examples from the Corpus

dividing line• A border is a dividing line marking an abrupt shift between two separate, sometimes antagonistic, entities.• One must insist on this clear dividing line between the two stages of writing.• A satisfactory dividing line could have been drawn in these terms.• The car swerved across the dividing line of a two-lane highway.• Congenital syphilis is arbitrarily divided into early and late stages with the dividing line at two years of age.

diˈviding ˌline nounChineseSyllable  

similar two things the difference between Corpus

dividing line
diˈviding ˌline noun [countable usually singular]
the difference between two similar things
    dividing line between
    What’s the dividing line between normal drinking and addiction?

dividing lineBrE /dɪˈvaɪdɪŋ laɪn/ 🔊NAmE /dɪˈvaɪdɪŋ laɪn/ 🔊 noun [usually singular] something that marks the separation between two things or ideas （两种事物或思想的）分界线，界限◆There is no clear dividing line between what is good and what is bad. 是非之间没有明确的界限。🔊🔊a place that separates two areas （分隔两个地区的）地界，分界线◆The river was chosen as a dividing line between the two districts. 两个地区以这条河流为界。🔊🔊