给你我最美好的祝福，当你需要我时，我会在你的身边。

Give you my best wishes when ever you need me, I'll always be there for you.

youdao

我将永远和你在一起，不让你从我的怀中离去。当你需要我时，我就陪伴在你左右。

I will be particularly with you. Never let you go away my arms. When you need me, Iill be around you.

youdao

我将永远和你在一起，不让你从我的怀中离去。当你需要我时，我就陪伴在你左右。

I will always be with you. Never let you go away from my arms. When you need me, I'll be with you.

youdao

It is true mathematically, you can add two numbers, but you've got to ask yourself,"What am I doing as a physicist when I add these two numbers?"

在数学上它是正确的,你可以引入这两个常数,但是你需要问问自己,当我引入这两个常数时,这么做有什么物理意义

耶鲁公开课 - 基础物理课程节选