求：preserve ,defend ,protect ,prevent的区别和各自用法.详求：preserve ,defend ,protect ,prevent的区别和各自用法.

求：preserve ,defend ,protect ,prevent的区别和各自用法.详求：preserve ,defend ,protect ,prevent的区别和各自用法. 请问 protect defend guard preserve的区别 pretect/defend/guard/preserve四者区别?Thank YOU defend,guard,preserve,keep的区别例子：It is not easy to places of historic interest.It takes a great deal of money and advanced technique.A.defend B.guard C.keep D.preserve 求protect,prevent,defend+sb from doing的区别protect,prevent,defend+sb from doing记得这几个词的用法是一样的,语意上怎么区分? 求高人指点defend……from 和insure……against的区别Spiders___insects.A.defend us from B.insure us against Defend from Defend.against区别Defend fromDefend.against区别 defend protect 见图 为什么不能用 defend preserve reserve的区别 cancel preserve delete 维护我最爱的人的英文应该怎么说?维护这个词在英文中有很多种维护一个人应该用哪个词组?维护的英文有to keep; to maintain; to conserve; to preserve; to safeguard; to uphold; to defend; to assert; to stand (or st I do solemnly swear I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States,and will to the best of my Ability,preserve,protect and defend the Constitution of the United S defend one's defend to bieber翻译 nothing to defend defend from 造句 辨析 preserve conserve maintain sustain preserve和reserve怎么区别?