1 expose sth (to sb);expose sb/sth (as sth) to show sth that is usually hidden; to tell sth that has been kept secret 暴露；披露；揭露: She didn't want to expose her true feelings to her family. 她不想在家人面前显露自己的真实感受。The politician was exposed as a liar on TV. 电视揭露那个政客是个骗子。

2 expose sb/sth to sth to put sb/sth or yourself in a situation that could be difficult or dangerous 使处于困难或危险的境地: to be exposed to radiation/danger 接触幅射；遇到危险

3 expose sb to sth to give sb the chance to experience sth 使有机会经历（某事物）: I like jazz because I was exposed to it as a child. 我喜欢爵士乐，因为从小就耳濡目染。

4 (in photography) to allow light onto the film inside a camera when taking a photograph （摄影）使曝光