a plague of locusts的用法和样例：
- A plague of locusts;a plague of accidents.
- Scarlett thought despairingly that a plague of locusts would be more welcome.
- He opens his prophecy by describing a plague of locusts, an allegory of the disasters to come upon a faithless people.
- This year, the harvest is not good because the crop has suffered a plague of locusts.
- Never before had there been such a plague of locusts, nor will there ever be again.