safeguard

safeguard 安全，保障，捍卫

safe,安全的，guard,保卫。

safeguard (n.)

late 14c., "protection, safety," from Middle French sauvegarde "safekeeping, safeguard" (13c.), from Old French salve, sauve (fem. of sauf; see safe (adj.)) + garde "a keeping" (see guard (n.)). Meaning "something that offers security from danger" is recorded from late 15c.

safeguard (v.)

mid-15c., from safeguard (n.). Related: Safeguarded; safeguarding.

1. The problem was to safeguard sites from encroachment by property development.

问题是要保护遗址免受房地产开发商的侵占。

2. Many people took second jobs as a safeguard against unemployment.

许多人为防失业都干两份工作。

3. to safeguard a person's interests

维护某人的利益

4. It is obligatory on every citizen to safeguard our great motherland.

保卫我们伟大的祖国是每一个公民应尽的义务.

5. Keeping clean is a safeguard against disease.

保持清洁是抵御疾病的防护措施.

【shelter, guard, harbour, safeguard, defend, shield, protect】
这组词都有“保护、保卫”的意思，其区别是：
shelter: 通常指寻找安全地方躲避风雨或使人免遭危害。
guard: 普通用词，指保持警惕以防可能的攻击或伤害。
harbour: 贬义词，指隐匿或非法保护、窝藏。
safeguard: 语气强，指采取积极措施预防可能发生的一切攻击或危险。
defend: 普通用词，指用武力或其它措施使人或物不受损害，消除危险。用作比喻时，指坚持某种行动、决定或意见。
shield: 语气比protect强，但侧重防止迫在眉睫的攻击或伤害。
protect: 普通用词，指用某种手段作为防御工具以防危险或伤害。