1. 名词：困境，进退两难的局面。例如：He was faced with a dilemma about whether to tell the truth or keep quiet.（他面临一个进退两难的局面，要决定是说实话还是保持沉默。）
2. 形容词：表示矛盾的，两难的。例如：She was in a dilemma situation, torn between her loyalty to her friend and her duty to report the truth.（她处于一个矛盾的情境中，陷入两难，要在忠于朋友和报告真相之间做出选择。）
