on the grounds的用法和樣例：
例句
- He left on the grounds of ill-health.
他借口身體不好，走了。 - I object to the plan on the grounds that it is too expensive.
我反對該項計劃，理由是花費太大。 - Such action can be justified on the grounds of greater efficiency.
以提高功效為依據可以證明采取這種措施是正確的。 - Anybody who did anything in America up to1900 was liable to be made into a film ... on the grounds of being a pioneer.
舉凡在1900年以前在美國做過(guò)某些事的人，都很容易被拍成電影 ... 以他是先驅人士為其理由。
