We need to keep our distribution ecosystem healthy.

我需要维持分流系统的正常运行。

Swimming can help people to keep healthy.

游泳可以使人保持健康。

This would transform medicine and how we'll keep our growing and aging population healthy.

这将疗，同时我试图保持不断增长且老龄化的人口健康的方法。

55. What does the author imply people in developed countries should do to keep healthy?

55. 作者暗示发达国家的人应该如何保持健康？

They are helping to keep children healthy and safe during a difficult time.

它正在帮助孩子在困难时期保持健康和安全。

Doctors have long advised patients to do physical activity to help keep their brains healthy.

长期以来，生一直建议患者进行体育活动以帮助保持大脑健康。

Well, there are two things that keep the banking system healthy, confidence and liquidity.

可信度和流动性。

They want to keep people healthy by providing toilets.

他想通过提供厕所来保持人的健康。

Eating lettuce keeps me healthy and I love singing opera.

吃生菜使我保持健康，我喜欢唱歌剧。

And more medical services are using teams of professionals to keep patients healthy.

越来越多的疗服务提供专业人员来让患者保持健康。

Right. Then you can avoid problems and keep your teeth healthy.

没错，这样就可以避免问题发生，并保持牙齿健康。

How else can we keep our eyes healthy?

还有其他什么能帮助保护眼睛健康的吗？

So how have you felt so far that you are keeping healthy, keeping balanced?

到目前为止，你是怎么保持健康和平衡的？

Today we talk a great about a great activity to keep healthy and cool.

今天，我谈论一项保持健康和凉爽的超棒活动。

First of all, topical fluoride is essential for keeping our teeth healthy.

首先，局部使用氟对保持牙齿健康至关重要。

And this is important to keep the population healthy and productive.

这对保持人口健康和生产力很重要。

And we can keep you all healthy, safe and clean.

我可以让你所有人都健康、安全和清洁。

Early detection and timely treatment are the best ways to keep eyes healthy.

尽早发现和及时治疗是保持眼部健康的最好方式。

Please take care of your bones and keep them healthy and strong.

请照顾好你的骨头，让它保持健康和强壮。

And keep this planet really healthy so that we can all thrive.

要让这颗行星健康，这样我才能生存。