guard

詞意辨析：

defend, protect, safeguard, guard, shield, shelter, harbour

這些動詞均有“保護、保衛”之意。
defend: 普通用詞，指用武力或其它措施使人或物不受損害，消除危險。用作比喻時，指堅持某種行動、決定或意見。
protect: 普通用詞，指用某種手段作為防禦工具以防危險或傷害。
safeguard: 語氣強，指採取積極措施預防可能發生的一切攻擊或危險。
guard: 普通用詞，指保持警惕以防可能的攻擊或傷害。
shield: 語氣比protect強，但側重防止迫在眉睫的攻擊或傷害。
shelter: 通常指尋找安全地方躲避風雨或使人免遭危害。
harbour: 貶義詞，指隱匿或非法保護、窩藏。　

英文解釋：

名詞 guard:

1. a person who keeps watch over something or someone
2. the person who plays that position on a football team
3. a device designed to prevent injury
   同義詞：safety, safety device
4. a posture of defence in boxing or fencing
5. the person who plays the position of guard on a basketball team
6. a group of men who escort and protect some important person
   同義詞：bodyguard
7. a precautionary measure warding off impending danger or damage or injury etc.
   同義詞：precaution, safeguard
8. the duty of serving as a sentry
   同義詞：guard duty, sentry duty, sentry go
9. a position on the line of scrimmage
10. a position on a basketball team

動詞 guard:

1. to keep watch over
2. watch over or shield from danger or harm; protect
   同義詞：ward
3. protect against a challenge or attack
   同義詞：defend, hold
4. take precautions in order to avoid some unwanted consequence

字典網

詞型變化：

名詞:guarder 動詞過去式:guarded 過去分詞:guarded 現在分詞:guarding 第三人稱單數:guards 英文字典

例句：

1. He bribed his way past the guard and escaped.
   他買通看守而逃之夭夭了。
2. Be on guard when somebody flatters you.
   有人奉承你時，一定要當心。
3. There are soldiers on guard at the gate.
   大門口有士兵在守衛。
4. The dog guarded the house against strangers.
   狗守衛著房屋，不讓陌生人進去。