关于英语话题的问题。很急

auction 是拍卖的意思 所以第1句话 你只要回答一个有价值的名次即可，比如 cars,jewelries都可以 第2句回答一个人就行 因为没有语境，所以我也不知道回答是谁。第3句是问拍卖的作用你可以回答：It can sell things for people who want to buy good things but don't know the prise.第4句：Beacause it can sell things quickly and fairly.不是opening bid吧，应该是bid opening 是开标的意思。英文翻译
1.to open (sealed) tenders; to open a bid
开标的中文解释
详细解释

拆开标单。通常由招标人召集投标人当众举行。 minimum raise 应该是说拍卖的底价升高了吧，或者就是说有人拍得价钱比底价高了。。。 你这些话都没语境的 不好说得！这是一篇文章里的吧？

What do we usually sell at auction？
- We sell artworks, artifacts and belongings of celebrities.
（我们卖艺术品、文物和属于名人的物件）

Who is at an auction?
Collectors, rich people who are willing to own valuable things, and a man in charge called auctioneer.
（收藏家，愿意拥有这些有价值东西的有钱人，以及主持拍卖的人）

How do auctions work？
Things being auctioned are sold to the person who offers the highest price.
（拍卖的东西卖给出价最高的人）

Why do we use auctions to sell things？
Auction is fairest way to decide whom to own a particular thing, given there is a large number of candidates. In addition, sometimes auctions are held to raise money for charity.
（拍卖在有很多潜在买家的情况下去决定谁拥有这件东西的最公平的方法。另外，有时候拍卖是为了为慈善机构筹钱）

opening bid是起拍价

minimum raise 是拍卖的时候买家出价的最小涨幅