a hard cover in which paper documents or magazines are stored活頁夾
a bookbinder 裝訂工
a machine used on farms to fasten crops into sheaves (= bundles) after they have been cut裝訂機
a substance added to a mixture to make all the parts stick together粘結劑;增粘劑
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切换为简体中文