建筑工人用大锤砸碎了旧砖墙。

The construction workers broke the old brick wall with ___sledgehammers.

这条新政策对小企业来说就像一把重锤，许多人都无法承受。

The new policy hit small businesses like a ___sledgehammer, leaving many unable to cope.

教练用严厉的批评彻底击垮了队员们的借口。

The coach ___sledgehammered the players' excuses with harsh criticism.