求这些词的英文解释,急!fortnight,treasure,valley,variety,butcher,pioneer,tobacco,exhibition,librarian,mechanic,biography,whistle,quarrel,cafeteria,cassette,moustache,barbecue,trumpet,voyage,receipt,absolutely,actually,advantage,aeroplane,angle,application,arrange,assistant,bargain,believable要英文的词语解释,不是中文翻译,谢谢!

fortnight，two weeks
treasure，highly valued object
valley，stretch of land between hills or mountains, often with a river flowing through it
variety，quality of not being the same, or not being the same at all times
butcher， person whose job is killing animals for food or cutting up and selling meat
pioneer，person who is among the first to go into an area or country to settle or work there　tobacco，plant from which these leaves are obtained
exhibition，collection of things shown publicly
librarian，person who manages library
mechanic，worker skilled in using or repairing machines or tools
biography，story of a person's life written by sb else
whistle，clear shrill sound made by forcing breath through a small hole between partly closed li
quarrel，angry argument or disagreement
cafeteria，restaurant (esp in a factory or college) in which customers collect their meals
on trays from a counter
cassette，small sealed case containing a reel of film or magnetic tape
moustache，hair allowed to grow onthe upper lip
barbecue，metal frame for cooking meat, etc over an open fire
trumpet，brass musical instrument with a bright ringing tone
voyage，long journey, esp by sea or in space
receipt，act of receiving or being received
absolutely，completely
actually，in fact
advantage，
condition or circumstance that gives one superiority or success (esp when competing with others)
aeroplane，aircraft that is heavier than air, with wings and one or more engines
angle，space between two lines or surfaces that meet
application，formal request
arrange，in order; make tidy, neat or attractive
assistant，person who offers help
bargain，agreement in which both or all sides promise to do sth for each other
believable, deserves to be believed

fortnight,two weeks
treasure,a collection of valuable things such as gold,silver and jewellery
valley,an area of low land between hills or mountains,often with a river flowing through it; the land that a river flows through
variety,several different sorts of the same thing
butcher,a person whose job is cutting up and selling meat in a shop/store or killing animals for this purpose
pioneer,a person who is the first to study and develop a particular area of knowledge,culture,etc.that other people then continue to develop
tobacco,the dried leaves of the tobacco plant that are used for making cigarettes,smoking in a pipe or chewing
exhibition,a collection of things,for example works of art,that are shown to the public
librarian,
mechanic,a person whose job is repairing machines,especially the engines of motor vehicles
biography,the story of a person's life written by sb else; this type of writing
whistle,a small metal or plastic tube that you blow to make a loud high sound,used to attract attention or as a signal
quarrel,an angry argument or disagreement between people,often about a personal matter
cafeteria,a restaurant where you choose and pay for your meal at a COUNTER and carry it to a table.Cafeterias are often found in factories,colleges,hospitals,
cassette,a small flat plastic case containing tape for playing or recording music or sound
moustache,a line of hair that a man allows to grow on his upper lip
barbecue,a metal frame for cooking food on over an open fire outdoors
trumpet,a BRASS musical instrument made of a curved metal tube that you blow into,with three VALVES for changing the note
voyage,a long journey,especially by sea or in space
receipt,(for sth) a piece of paper that shows that goods or services have been paid for
absolutely,used to emphasize that sth is completely true
actually,used in speaking to emphasize a fact or a comment,or that sth is really true
advantage,(over sb) a thing that helps you to be better or more successful than other people
aeroplane,(BrE) (AmE airplane) (also plane BrE,AmE)a flying vehicle with wings and one or more engines
angle,the space between two lines or surfaces that join,measured in degrees
application,(to sb) (for sth / to do sth) a formal (often written) request for sth,such as a job,permission to do sth or a place at a college or university
arrange,to plan or organize sth in advance
assistant,a person who helps or supports sb,usually in their job
bargain,a thing bought for less than the usual price
believable,that can be believed