1、wiretap
搭线窃听;窃听或偷录;
The wiretap, the electronic eavesdroppers would have public approval.
那时,电话窃听,电子窃听将会为社会所认可
2、existence
存在;实在;
I was unaware of his existence until today.
直到今天我才知道有他这么个人
No reference to their existence appears in any literature of the period.
这一时期的文学作品中都没有提及他们的存在 。