bring about improvement的用法和樣例：
例句
- However, we are actually doing much of this research for the improvement of life for humans.
然而，我們確實正在做很多這樣的研究來改善人類的生活。 - Oral contraceptives can be used over a long period of time to treat your acne, although it may take a few months for you to notice an improvement in your complexion.
口服避孕藥可在很長一段時間來控制您的痤瘡，盡管它可能需要幾個月的時間來改善你的膚色。
