be warned about

• 被警告有

be warned about的用法和样例：

例句

1. Although he was warned of the danger, he adhered to his, olans to climb the mountain alone.
   虽然他被警告有危险，但他仍然坚持其独自爬山的计划。
2. Hanging on barbed wire alongside many forested areas are red-and-orange triangular signs warning about land mines.
   许多森林区旁的铁刺网上挂著橘红色三角形标记，警告有地雷。