艰难地

Downhill mountain bicycles have tough construction and as they have provisions like large, high gears, they are aptly suited for riding down out-and-out downhill trails and racecourses.

山地自行车下坡有艰难建设和为他们规定一样大，高的齿轮，它们恰当地适合骑马下跌地地道道的下坡小径和赛马场。

It was very difficult to come to grips with this: I was stunned to realise years later that I was stigmatising my own boyfriend.

认真地思考和讨论这个问题是非常艰难的：多年后，我意识到自己曾经就是在辱没自己的男友，我为此而感到震惊。

According to the model,the transmembrane voltage on the cells in suspensions were calculated.

由于非热效应的复杂性，对其产生机理的研究一直在艰难而积极地进行着。

The worst seems over. In March 2009 share prices began a long bull run.

最艰难的时期似乎已经过去。2009年3月，股票开始长时间地上涨。

The post-war years were difficult for her, while her husband's business and estate, including some of her own property and savings, were held by the state; and Flagstad was met with malicious newspaper articles and demonstrations wherever she performed.

这样在战争结束之后的几年里对她来说无疑是举步艰难，因为那时正当她丈夫的生意事业与资财地产，就连包括她自己私人所拥有的财产，所有权资产和个人存款积蓄在内，竟都被洗劫一空——被没收扣留到了国家的腰包；并且我们不幸的弗拉格丝塔特小姐还时不时地受到来自最自作多嘴，最恶毒媒体报纸中那愚蠢歹毒，心怀不轨之文章评论的邪恶攻击和恶言中伤，甚至还要承受来自她所演出地点那些不明事理的终极蠢人们对她的示威反对。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。