如何使用 "warn" 造句

1. Passersby warn drivers about new sniper positions and checkpoints .
路人警告司机新的狙击阵地和检查站。
2. Image-recognition software can warn of other aircraft .
而图像识别软件可以在其他飞机出现时发出警告。
3. But scientists warn that this volcano is extremely unpredictable .
但是科学家仍然提醒民众,他们难以预测这座火山的爆发事态。
4. The city government has set up a twitter account to warn citizens about shoot-outs .
该市政府开了一个twitter账户以警示市民枪击的危险。
5. Her parents warn her against listening to catholic prayers .
她的父母告诫她不要听天主教的祈祷。