"Kill a fly with an elephant gun" nghĩa là gì?

Doctors often prescribe (kê đơn) antibiotics even for minor ailments (bệnh). They’re trying to kill a fly with an elephant gun.

The authorities cancelled the programme merely for misbehaviour of an individual; they seemed to kill a fly with an elephant gun.

Adding a massive stimulus (gói kích thích kinh tế) now is like trying to kill a fly with an elephant gun. In fact, it is totally unnecessary as we just had a large stimulus package. It is dangerous as it is likely to further inflate the asset bubbles (bong bóng tài sản) described later in this article, accelerate inflation and increase interest rates. It also needlessly increases our deficit (thâm hụt) and national debt, both of which are already way to high.