preserve reference materials的用法和樣例：
例句
- The museum houses a collection of mementos, materials and documents.
博物館保存著(zhù)很多回憶錄以及文獻資料。 - In order to help you understand rules and regulations concerning working in Taiwan, please read the primer carefully and keep it with you for future reference.
為協(xié)助您了解在臺灣工作期間相關(guān)規定，以保護自身權益，請詳細閱讀本資料，并妥善保存，以便查詢(xún)。
