spotn.地点；场所；职位；污点；斑点；少量；聚光灯；插播节目adj.现场的；现货的；插播的v.（使）产生污渍；玷污；认出；用灯光照射spotface[化] 锪孔

1. If you discover danger, you should raise the alarm immediately.
   发现危险，应立即发出警报。