计算，其中D是由直线x=2，y=x及曲线xy=1所围成的闭区域

to,her,unhappy,mother,know,I,didn't buy,for,a card,was连词成句 水泊梁山上的大旗上写着四个大字是什么 水泊梁山上的杏黄大旗写着什么 让我们离开这里 的英文怎么说啊 是get 爱里here吗? ____I lost the way?I'm new here.A.Whar if B.As if C.How if D.When if选哪个, Christian是什么意思.每个方面的意思都说说越全越好．越清楚越好．加分 christian detail-oriented是什么意思 connection-oriented是什么意思 dubiously oriented ability-oriented和test-oriented什么意思RT. christian gerhaher是什么意思 Christian Louboutin是什么意思 christian association是什么意思 My watch was broken同义句 My sister has a new watch.(对a new watch 提问） a for wanted I buy sister to my watch连词成句 It has no legs .But it walks day and night .这个谜语地答案希望准去 What has no legs,but can waik all day and all night?谜语 take a tow fuck me是什么意思? beginning和At first的区别 kenny什么意思 LYDIA,YOU ARE ALWAYS IN MY MIND. He took a pen ( ) his pocket and began to write.A.into B.onto C.out of D.out from回答时,添选项就好 with these ---,jeff took out a piece of paper and began to write. Remember 有谁知道Remember这是啥意思 英语翻译如果可以希望可以帮忙介绍一下bertrand russell 行会2文艺复兴怎么玩? Remember是什么意思 Bertrand Russell哲学作品关于Bertrand Russell的哲学作品（提供作品名即可）.