非周期信号的频谱特点

第四大题2,3,题怎么写? I still can dream That one day love willfall our from the sky帮我翻译下 if you still can not tell the right one,believe the first one that comes to your mind.怎么翻译 I dream of that ,who can tell me how to refresh?翻译成中文是什么意思? （ ）鲸用肺呼吸,（ ）它不是鱼类,而是哺乳类动物.这道题是因果关系,还是转折关系呀? 【造句】have a oposite effect onRT 用have effect on造句,五句, after___(have)breakfast She doesn't have her breakfast until after she's__her children__A.got…offB.got……acrossC.got……awayD.got……over i'll be the dream that keeps u awake帮忙翻译下谢谢 well和good分别修饰什么?well和good的区别?(后面跟什么词性：形容词 名词 ?)有学到I can speak English very well,那good要怎么用?还有为什么he can speak English well.还有he speak English well.为什么一个用can 一 because a friend in need is a friendd indeed是什么意思 translate：You need not have taken such thick clothes because here is very hot.^ I can watch volleyball games on TV very o( ) .(首字母填空） cayman怎么读 cayman怎么念 意大利语anche a te 意大利语senza di A:How does Emma feel now?B:___ ___ ___,Because__ __ ___ __at home.___填什么 谁知道The TV play is bored and we don't like it 中的“and"的用法谁知道 The TV play is bored and we don't like it 中的”and"的用法 为什么是That does not belong to me 而不是That is not belong to me that,suitcase,belong,her,not,to,does（连词成句） 那个向上的箭头是什么意思? come stai?male.grazie.意大利语还是别的语言? cioa come 到底是come sta还是stai 意大利语中Come va?是你怎么样的?的翻译,那这里的Va是什么动词的变化而来还是这句就是固定的呢? 意大利语 come seicome sei是不是英语的How are you最近怎样这个sei查是“六”的意思come 意大利语的si是什么意思?有人提问,然后有人回答si.这个si是肯定还是否定呢? Does not support the love which does not trust also to call to 意大利语： Posso andare a vederlo?我可以去看看房吗?答：Certo, come no. 这里的come no是什么意思? when we arrived,we found the metting room crowded with quite few students那个词用错了