英语翻译It has been demonstrated that many times that it is this idea that is causing the problems rather than any lack of skill in mathematics.请帮忙翻译,最好能有个分析,谢谢有缘人了

demo 例如：it is Demo Real animation. DEMO VERSION HAS EXPIRED是什么意思? it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed 英语翻译“上升”有一种句型“it has been on rise”若“下降”用“decrease”采取同样“it has been _______”句型怎么说? 英语翻译Nothing should be spoken before it has been heard.Nothing should be read before it has been spoken.Nothing should be written before it has been read.这要怎么翻译啊?是不是一首诗? 英语翻译翻译 it is the first time tim has ever been to another country. 英语翻译Life is what we make it,always has been,and always will be. 英语翻译“how long it has been since i have done something 最好结合情景举个例 英语翻译It has been shown that backward waves exist in chiral media. it's always been you(It has always been it has been可以缩写成it's been it's been.的全称是不是 it has been... It has been raining these days. It has been e()hot this week.