1.It's all coming down to...成败攸关于…
come down to是指情况到了最后成败的关头，短期内就要见真相：
例句:
A: It's all coming down to these last two days.
成败就看这最后两天了。
B: We can do it!
我们做得到的！ 也可以指彼此的关系每况愈下，到达谷底：
A: I need more money. Give me some.
我还要钱。给我一点。
B: Has our relationship just come down to this-money?
我们的关系已走到了这样，钱钱钱？ 你也可以说It came down to the point where...以表示情势的发展已至最后的临界点：
A: It came down to the point where I had to make a decision.
事已至此，我得做出决定。
B: So you decided to quit your job and come here?
所以你决定辞职到这里来？
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