英语语法分析

So how high would we have to pile the sandbags?

那么我们需要垒叠多高的沙包防洪呢？

I throw heavy stuff around (sandbags, kettlebells, logs).

我投掷重物（沙包，壶铃，圆木）。

But if a currency war is brewing, more countries will pile up the sandbags.

但是，如果一场货币战正在酝酿，许多国家就会使出杀手锏。