① guard指“用極度的小心和戒備實際的或潛在的危險”。
These special branch men were appointed to guard the Prime Minister. 委派這些特種警衛(wèi)人員來保護總理。
② safeguard是指“保全使之完好無損”,“對長遠的可能發(fā)生的事情深謀遠慮”。
Saving money regularly will help to safeguard one's old age from want. 不斷按時儲蓄將會使晚年免于匱乏。
③ defend強調(diào)目前所面臨的危險,指“用武力或其他對策進行保護、辯護”。
It is the duty of every citizen to defend his country when it is attacked by the enemy. 國家受到敵人攻擊時,保衛(wèi)國家是每一個公民的職責。
He is so obstinate that he still tries to defend his theory,although it has been proved wrong. 他那人固執(zhí)極了,盡管他的理論已經(jīng)證明是錯誤的,他還是設(shè)法替自己辯護。