late 14c., "steadfast, resolute," from Old French constant (14c.) or directly from Latin constantem (nominative constans) "standing firm, stable, steadfast, faithful," present participle of constare, from com- "together" (see com-) + stare "to stand," from PIE root *sta- "to stand" (see stet). Of actions and conditions from 1650s. Related: Constantly.
constant (n.)
1832 in mathematics and physics, from constant (adj.).
实用例句
1. There was constant jeering and interruption from the floor.
议员席上不断有人在嘲讽和打岔.来自柯林斯例句
2. It's a constant struggle to try to keep them up to par.
要让他们达标，需要不断努力。来自柯林斯例句
3. Constant wheelchair use will scuff almost any floor surface.
任何地板上经常有轮椅走动几乎都会有所磨损。来自柯林斯例句
4. The weather is a constant topic of conversation in Britain.
在英国，天气是交谈中永恒的话题。来自柯林斯例句
5. An automatic voltage regulator ensured a constant output from the generator.
