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旅行和旅游的差别在于什么? cut your losses是什么意思 cut into it with your teeth意思（谚语） small The is jacket .造句 什么是集合的几何意义 一个集合的几何意义已知集合A=｛（x,y)| |x-a|+|y-1|≤1},则集合A表示什么图形?是如何画出来的? "重要构成两个几何的元素是一样的,我们就称这两个集合是相等的"这句话是什么意思啊 集合a={1,2,3,4},问a上可以定义多少个反对称关系 生日集福多少是什么意思 Do you want to join in the hiking this sunday?If so it will be useful to read the i______ below.短文填空 Novels are read for fun,so you want to read on without looking up all words in a dictionary这里的 read on 怎么理解呢? But besides that,the vast American territory offers numerous tourist attractions, 最后是tourist attractions hainan pronises to be one of the greatert tourist attractions A和B是两个集合,差集?是A内的元素减去B内的元素剩下的么? “只要构成两个集合的元素是一样的”, If you want to buy books,you go to the b_______ pig的意思是什么 How many of us have looked up at the stars and wondered about other worlds?How many of us abohave looked up at the stars and wondered ut other worlds?Of course,we know a great deal about the universe now but for people living thousands of years ago,t 帮忙翻一下Have you ever wondered if coffee was more than “just a drink”? Have you ever wondered what coffee has in common with life itself? What exactly do you do when you make a cup of coffee? Take one cup. Put in a spoonful of sweetness. P have you ever cared about me? 尤其.开拓.决断得反义词 热忱 开拓 吝惜 (反义词) 英语根据汉语意思完成句子 请尽量完成这项工作.Please try （ ） （ ） this work today句型转换Please look after your suitcase well.（改为同意句）Please （ ） good （ ） （ ） your suitcase出示给某人看的英 Please remember 什么 your homework this afternoon 英语翻译如题 英语翻译：我曾经看到过一次流星,许了一个愿望,但是没效果 扩展的近反义词 两个集合相等应满足的条件是什么? 两个集合相等?那他们不就是同一个集合嘛!为什么要说是两个? 两个集合相等,指的是······两个集合相等,指的是－－－－－－－－与集合中元素顺序无关记作A=B.这个填空题不太了解请学姐学长们讲一讲! 如果两个集合相等,那么………………那么其中一个是不是另一个集合的子集?别骂我,