吃透英语课本，提升在校竞争力
n. 间谍活动
a campaign of industrial espionage against his main rival
针对他主要竞争对手展开的商业间谍活动
Espionage is a serious crime.
间谍活动是一种严重犯罪。
industrial espionage
工业间谍；工业谍报活动
n.间谍；间谍活动；刺探
illegal
secret agent
