1. The castle was heavily besieged by enemy troops.
这座城堡遭到敌军的猛烈围攻。

2. The actor was besieged by fans asking for autographs.
这位演员被要求签名的粉丝们围得水泄不通。

3. The company was besieged with complaints about their products.
这家公司被大量关于他们产品的投诉所困扰。