中心对称图形的定义

她的爱好是什么翻译成英语用she还是her Lucy在她父亲旁边 英文翻译 There was an old man standing over herstand over不是延期么?也可以表示站么?本句该如何翻译呢? 单句改错：Have you noticed that there is an one-eyed man standing over there? I love all the seasons.They are all beautiful and find many thing to do.这句话有没有错 I do not agree with you!The love give you strong and encourage?what do you think so? No,he doesn's.My father doesn's like flowers.改成疑问句 He doesn't like salad( ) milk. 改正were you visit the museum last weekend?把原因打上 明朝共有多少位皇帝? "They have many difficulties to complete the project in two years." 这句话对吗?如果哪位能够帮忙分析一下错在哪里或者分析一下句子结构就更好了， there are only a few steps to doing the experiment 为什么不用to do,而用 to doing 那位英语高手帮忙翻译个句子!急! 用devote to doing work on the project 我一天只能在这个项目...那位英语高手帮忙翻译个句子!急!用devote to doing work on the project我一天只能在这个项目上花两个小时. 为什么 S(n-1)=Sn-An 已知数列(an),Sn是前n项的和,且an=S(n-1)+2,a1=2求数列（an）的通项公式设bn=1/log2an,Tn=b(n+1)+b(n+2)+.+b(2n),是否存在最大的正整数k,使得对于任意的正整数n,有Tn>k/12,恒成立?若存在,求k值,不存在说明理 数列{an}满足an+an+1=1/2(n属于N*),a1=-1/2,Sn是{an}的前n项和,则S2011=_ 英语翻译还有It will be three years before he graduated. 直到他回来我才离开 it was __ __ he came back __i left ping reguest could not find host www.baidu.com.Please check the name and try again.想知道中文的解释 我用命令提示符键入：ping servername出现了：Ping request could not find host servername.Please check the name and try again 韩国的矿产资源丰富吗? 怎么把名字转换成英文啊 when he came back with plenty of money ,his father ____three days before .A.was dead B.had been dea 中文名字转换成英文我一直想有个英文的名字 但 我 也想不到 所以只有麻烦各位了 在这里先说声谢谢了 我的中文名字叫刘军 Let's the new history museum.(visit visiting visits选哪个) 长江中下游比较丰富的矿产资源有什么（急!谢喽）只要填一个答案不要胡说滴 visit the museum是什么意思 ying ling wants to visit the history museum.里为什么要加to? the kids felt it b______ to visit the history museum 请问应该是什么,感激不尽!如果是，boring，那为什么无 be 动词，adj.应该加be动词啊？ Sn-S(n-1)=an,可否等于S（n+1）- Sn=an?快速! Sn-S(n-1)等于an还是a1 Ping GG:Request timed out;Ping money:Destination unreachable; Ping Love:Unkown host name.