rip up 撕碎
If we wrote I think he would rip up the letter
如果我们写信的话,我想他会把信撕得粉碎。
2. Government debts are piling up, but so far low interest rates mean that they are cheap to service.
pile up 堆积;积聚
Problems were piling up at work.
工作中的问题越积越多。