Backfiring
v. （内燃机等）发生逆火( backfire的现在分词 ); 发生回火; （枪炮）向后爆发; 发生意外
🗣️ 情景例句
Mary, I'm glad you called me.
Mary，很高兴你给我打电话。
Is there a public phone near here?
这附近有公用电话吗？
What happened before printing was invented?
印刷术发明以前是怎么一回事？