He did a lot to improve conditions for factory workers.
他為改善工廠工人的工作條件做了許多工作。
I thought the best way to improve my French was to live in France.
我認為提高我的法語水準的最好辦法是到法國生活。
Her health has improved dramatically since she started on this new diet.
自從開始這種新的飲食，她的健康狀況大為改善。
