这是一种照看她的方式，以保证她走路要小心。
It was a way to keep eye on her make sure she was looking both ways.
我走路要更加小心，因为我看不到曲线：所有东西在我看来都是平的，右侧的事物我看不到。
I walk more cautiously because I don't see curves yet: things are flat for me and I don't see or expect things on the right side.
如果你的关节有问题，那你在走路时要小心或者要听一些医学方面的建议——但对我们大多数人来说，走路没有什么痛苦感的。
If you have joint problems, you'll need to be careful and perhaps get medical advice - but for most of us, walking is painless.
如果你的关节有问题，那你在走路时要小心或者要听一些医学方面的建议——但对我们大多数人来说，走路没有什么痛苦感的。
If you have joint problems, you'll need to be careful and perhaps get medical advice - but for most of us, walking is painless.
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