滑移率20摩擦系数

为什么喝酒要说“干杯” 干杯的英文是cheers吗 the house ______ at the moment will be conpleted by the end of next month.a.builtb.to be builtc.being built d.having been built cheer up Cheer up!RT cheer 相濡以沫的含义 "相濡以沫"是含义. “干杯”（cheers)这个单词在英语中为什么末尾要加s? 有一首英文歌很好听 里面有这两个词语she know 进来看详细描述挺好听的,也挺好唱.轻快极了,有一句的最后是she know就是没有搜素到 cheers为什么要加S 求一首英文歌..歌词she doesn't know who i am...还有i am a teenage dush bag baby 英语翻译一个曾经深爱的人,一段刻苦铭心的爱情,要忘记,谈何容易 英语作文My dream 50个单词英语作文My dream 50个单词英语作文My dream 50个单词 比如是画家.作家…… 最好是医生 题目是我的梦想喔 跑题例子：My dreamI think different people has different dream .What about you My dream英语作文70个单词 The Sorcerers in Harry Potter Books哈利波特中1－6部所提到的魔法有哪些 用英语表达 Celia is borrowing Harry Potter II in theCelia is borrowing Harry Potter II in the library.The assistant is looking for it on the shelves 中文意思是什么? 可以说it's glad to meet you吗? We liked Guangdong food very much.(对划线部分提问）划线部分是very much. 填空reading harry potter has become very popular a...many students these day HARRY POTTER is a very popular .Many students like to read 填it 还是oneHARRY POTTER is a very popular .Many students like to read 填it 还是one Look at these people _______(play)basketball on the square.如果是现在进行时为什么没有BE动词 I am very glad to receive you so sincere reply这么说可以么 请指教 是甚么I am very glad to receive your letter.Now let me tell you something about how to learn Chine 什么笑什么什么成语 什么什么笑什么成语 什么什么什么笑 成语不什么什么笑 别惹我!翻译英文 请高手帮【别惹我】翻译英文是什么意思? what does a student do in different seasons in your country? What do different flowers stand for in your country?Can you give a few examples?谁能帮我回答下我只知道rose 代表love 谁帮我回答下 i like playing basketball i think playing basketball is f_ 填词,我写的是FIT,同学写的是FUN我只想问,我是对的吗,不要什么更好,考试!