He had dedicated his life to bettering the lot of the oppressed people of South Africa.
他一生致力于改善南非被压迫人民的命运。
《柯林斯英汉双解大词典》
2
Governments and enterprises should take the lead in bettering the environment.
政府和企业应该带头改善环境。
3
While the efforts are certainly not futile, the results of such bans will likely only start to be seen by generations down the line, bettering the world for the future.