He was paid an undisclosed sum.他得到了一笔数目不详的钱。Lurgiuses have used undisclosed promoter and corrosion inhibitor.鲁奈公司采用了未公开的活性剂和防蚀剂.The third person does not become liable to an undisclosed principal.第三人可不向隐名本人承担责任....
书后有注解。There are explanatory notes at the back of the book.把你的答案同书后的答案核对一下.Check your answers with the key at the back of the book.这本教科书里要使用的词汇表印在书后.The vocabulary used in the course book is printed at the back....