Cách sử dụng
The phrase "spy on" typically refers to secretly watching or gathering information about someone or something without their knowledge or permission. It is often used in a negative context as it involves invading someone's privacy. For example, someone might "spy on" their partner to find out if they are cheating, or a government might "spy on" its citizens to gather information about their activities. It's important to use this expression responsibly and respectfully, and to always consider the ethical implications of spying on someone.