大不了就从头再来！这句话的英语怎么说？
Back to the drawing board means to start planning something again because the first plan failed .
'drawing board' 的本意为绘图板，制图板。再次回到制图板上，也就是重新来过的意思。
Back to the drawing board 指，在某件事遭遇失败之后，重新来过。
Rick has tried to save his company recently . But his first business venture finally failed. He has nothing to do but back to the drawing board.
Rick 最近在尽全力拯救他的公司。但是他的初次创业冒险还是失败了。他只能从头再来。
We can t be upset all the time because of only one small failure. We need to believe ourselves and back to the drawing board.
我们不能因为一个小小的失败就一直沮丧。
我们需要相信自己，从头再来。
Go back on sth means to fail to keep a promise, or to change a decision or agreement.
go back 意为“回去”，但是go back to sth 的意思是
违背（承诺或协议）；改变（决定）。
我们可以这样搭配着来使用：go back on one s decision 或者go back on one’s word . 都可以为改变主意，说话不算话。
Jenny agreed with me yesterday. But she just went back on her
word and not go on vacation with me .
她昨天同意我的看法。但是她又改变了主意，不和我去度假了。
After a long discussion with the experts in the meeting ，all the doctors went back on their decisions to start as soon as possible.
在会议上和专家进行了长时间讨论之后，所有的医生改变主意，决定尽快开始。
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