intruder

He owned a gun for scaring off intruders.

他有一支枪，用来吓走入侵者。

But those who want to ban the bomb for American citizens claim that if you have one locked in the cabinet, with the fuse in a drawer, you would never be able to assemble it in time to stop an intruder.

但那些希望禁止美国公民使用这种炸弹的人声称，如果你把一枚炸弹锁在柜子里，把引信放在抽屉里，你就永远无法及时组装起来来阻止入侵者。

Governments, private groups and individuals spend billions of dollars a year trying to root out non-native organisms that are considered dangerous to ecosystems, and to prevent the introduction of new intruders.

政府、私人团体和个人每年花费数十亿美元，试图根除被认为对生态系统有危险的非本地生物，并防止引入新的入侵者。

He felt that this team regarded him as an intruder.

他觉得这个队伍把他当成不速之客。