do better every day

My pleasure, I don't know the details but I do know that its people like you and your wife that put your life on the line every day that make the world a better place.

不客气,我不了解详细情况,但是有一点我是知道的，是像你和你的妻子这样的人,你们每一天都在冒极大的风险，命悬一线，才使这个世界变成更美好的地方。

At the end of the day, every little bit you do to make the world a better place makes a difference – and it really matters.

一日即过，你所做的如何一件让这个世界变好变美的事情都是有意义的。

Doing exercises is really necessary for everyone and we'd better take some time to do exercises every day.

锻炼对每个人来说都是很有必要的，而且我们最好每天都花点时间来锻炼。