求英语达人帮忙看看这个句子有错误没Agoodsecuritysy
A good secury system of airport can protect aeroplane from hijacker.
　 A good security system of airport can protect aeroplane from hijacker. 我认为还是把hijacker 改为：being hijacked比较好。（原意：好的机场安全系统可以保护飞机不被劫持。）