九下句子16～23（完）

16-17. 由于有了更完善的医疗保健服务，大多数人较以往生活得更健康、更长寿。
Thanks to better health care, most people are living healthier and longer lives.
18. 快餐是不健康的，你只能偶尔吃点儿。
Fast food is not healthy. You should only have it once in a while.
19. 可以在学校食堂加热一下，但应该在家做好。
We can heat it up in the school kitchen, but it should be cooked at home.
20. 进餐时，主人可能会请你自己取食物（通常女士优先），并告诉你“请随意”。
During the meal, you may be invited to serve yourself by someone who says “Help yourself.”
21. 我感到很尴尬。但是我的朋友们并不是在嘲笑我。
I felt quite silly, but they were not laughing at me.
22. 刚刚开始跑800米的时候，我总是最后一个，只想放弃。
When I started running in the 800 metres, I always finished last and I just wanted to give up.
23. 但我学会了要尽力争取，不仅仅在跑步的时候，而是做任何其他事都是如此。
But I’ve learnt to try my best, not only with running but with whatever else I do.