你有权保持沉默的完整句子是：You have the right to remain silent. Anything you say can and will be used against you in a court of law. You have the right to have an attorney present before and during the questioning. If you cannot afford the attorney, one will be appointed to represent you before any question。
这句话是美国法律中最引以为豪的维护犯罪嫌疑人权利的米兰达规则。在美国，警察在审问犯罪嫌疑人之前一定要宣读米兰达明示，否则口供将不具有法律效力，不能作为呈堂证供。