3Q ..I never had to say goodbye You must have known I wouldn ' t stay

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• 3Q ..I never had to say goodbye You must have known I wouldn ' t stay
• 帮忙翻译下Nothing I've Ever Known―Bryan Adams,谢谢Right now I feel - just like a leaf on a breeze Who knows where it’s blowin’ Who knows where it’s goin’ I find myself somewhere I - I never thought I’d be Going round in circles Thinking about you and me How do I explain it when I don’t know what to say What do I do now - so much has changed Nothing I have ever known - has made me feel this way Nothing I have ever seen - has made me want to stay but here I am
• 已知a方+b方+c方=1,a(b分之1+c分之1)+b(a分之1+c分之1)+c(a分之1+b分之1)=-3,求a+b+c
• 已知e为单位向量，|a|=4，a与e的夹角为2/3π，则a在e方向上的投影为 _ ．