无论我多么努力尝试，体重就是减不下来。

I never manage to lose any weight, ___no matter ___how hard I try.

无论你去哪里旅行，尊重当地习俗都很重要。

___No matter ___where you travel, it's important to respect local customs.

无论别人说什么，我都相信自己的选择。

___No matter ___what people say, I believe in my own choices.