"residue at the bottom of a liquid," mid-14c., perhaps from past tense of grind (v.). Other senses, such as "enclosed portion of land" (mid-15c.) are from ground (n.).
实用例句
1. In the interview he gave some grounds for optimism.
他接受采访时阐述了持乐观态度的理由。来自柯林斯例句
2. Owen was against it, on the grounds of expense.
欧文因费用问题对此表示反对。来自柯林斯例句
3. Discrimination by employers on the grounds of race and nationality was illegal.
雇主以种族或国籍为由歧视员工是非法的。来自柯林斯例句
4. They fanned out and carefully combed the temple grounds.
他们呈扇形散开，在寺庙周围仔细搜寻。来自柯林斯例句
5. The government says the detentions are necessary on national security grounds.
