n.堆存;堆挤;
例句:
There had been a twenty-car pile-up on the highway.
高速公路上有20辆车相撞.
And as the water level falls, salt deposits continue to pile up.
当水位日趋下降的同时, 含盐的沉积物却持续堆积增高.
The Chinese still pile up surpluses and need to put them somewhere.
中国仍然在享受着贸易顺差,在思考该把钱投向哪里.