间谍活动

1.He had been engaged in emissary activity before he was discovered.

在被前他一直从事间谍活动。

2.He used his job as a screen for his spying activities.

他利用他的工作作掩护进行间谍活动。

3.He was accused of spying and was declared non grata.

他被指从事间谍活动而被宣布为不受欢迎。