1721, "to mark underneath or below with a line," from under + line (v.). Similar formation in Dutch onderlijnen. Related: Underlined; underlining. The noun is attested from 1888.
实用例句
1. His failures underline the difference between theatre and film direction.
他的失败说明了导演戏剧和电影是不同的。
来自柯林斯例句
2. Please underline the noun clauses in the passage.
请用线画出短文中的名词性从句.
来自《简明英汉词典》
3. Their brief visit has served to underline the deep differences between the two countries.
他们短暂的访问恰恰凸显了两国间分歧的严重程度。
来自柯林斯例句
4. Take two coloured pens and underline the positive and negative words.
