Two thousand years later, British letter writers used exactly the same method, not to achieve [______] but to avoid paying excessive postage costs.
동의어 · confidentiality, privacy, concealment파생어 · secret(비밀의, 비밀)
★ 주제문 — S5·S6·S7·S8이(가) 이 문장을 떠받칩니다 — S1을(를) 맥락(으)로 뒷받침