1727, from broad (adj.) + -en (1). The word seems no older than this date (discovered by Johnson in one of James Thomson's "Seasons" poems); broadened also is first found in the same poet, and past participle adjective broadening is recorded from 1850.
双语例句
1. We must broaden our appeal.
我们必须进行更广泛的呼吁。
来自柯林斯例句
2. We'll broaden the discussion out in a minute.
我们马上要扩大讨论的范围。
来自柯林斯例句
3. a promise to broaden access to higher education
拓宽高等教育渠道的承诺
来自《权威词典》
4. Let's broaden out the discussion to talk about education as a whole.
