1. Big deal 重要的事
It's no big deal. I don't mind helping you out.
这没什么大不了的,我不介意帮助你摆脱困境。
链接:
No biggie! 没什么大不了的!
2. Big picture (事情的)主要部分,重点
Concentrate on the big picture for now. Don't worry about the minor details.
先把精神集中在重点上,不要担心次要的细节。