infrequency怎么读？

n.很少发生，罕见...

With their greater infrequency the sounds increased in strength and sharpness.寂静的间歇逐渐变长;声音的迟延变得难以忍受....

n.改革，改良，改造( reform的名词复数 )v.改善( reform的第三人称单数 )...

n.寄宿生( boarder的名词复数 )，寄宿者，登船（或飞机等）的人，被派强登敌船者...

我们起初仍勉强过得去, 但彼得失业以来,日子就过得极艰难了.At the beginning, we scraped along, but it was very difficult since Peter lost his job....

“恐怖”的英语可以翻译为：terrifying，horrible，dreadful，terror，consternation...

舌向错位，舌向移位...

economic的音标：economic的英式发音音标为：[ˌi:kə'nɒmɪk]economic的美式发音音标为：[ˌikə'nɑmɪk]...

harmoniously的音标：harmoniously的英式发音音标为：[hɑ:'məʊnɪəslɪ]harmoniously的美式发音音标为：[hɑr'monɪəslɪ]...

简要介绍以此类方法对合成苯甲醛的研究.Based on the reactions , this paper reports research for synthesizing benzaldehyde.再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率为91.9%,并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性.This product with Br 2 was obtained 2 - bromo - 4,5 - hydroxy...

ablepharous的音标：ablepharous的英式发音音标为：[æb'lefərəs]ablepharous的美式发音音标为：[æb'lefərəs]...

“火车”的拼音为：huǒ chē...

Objective : To evaluate the wind - damage effects on quality of heartwood of Lignum Santali Albi.目的: 评价风害损伤对檀香药材质量的影响.Heartwood from dark brown to purple brown, alternating stripes.心材暗红褐至紫褐色, 具深浅交替条纹.Sapwood contains xyl...

He turned away in sullen, resentful silence.他闷闷不乐、心怀怨恨、一言不发地转过身去了。The offenders lapsed into a sullen silence.那些冒犯者都闷不作声了。Bob looked pale and sullen.鲍勃脸色苍白，闷闷不乐。...

“买卖”的英语可以翻译为：uying and selling，business，shop，deal，buy ...

“松香烯”的拼音为：...

contributory的音标：contributory的英式发音音标为：[kən'trɪbjətəri]contributory的美式发音音标为：[kən'trɪbjətɔri]...