un·der·line /ˌʌndəˈlaɪn $ -ər-/ ●●○ verb [transitiveT] 1. LINEto draw a line under a word to show that it is important 在…之下画线〔以示重要〕
2 EMPHASIZEto show that something is important 强调;使突出 SYN highlight This tragic incident underlines the need for immediate action. 这一悲剧事件突显了立即采取行动的必要性。
► see thesaurus at emphasize