The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。The aim is to fly at about Mach 2, twice the speed of sound.目标是以大约2马赫的速度飞行，也就是音速的两倍。Empirical results are needed in...
Industrial production is stagnating.工业生产正停滞不前。ITT was stagnating when Geneen became the chief executive officer in 1959.1959年吉宁出任行政总负责人时,国际电话电报公司正处于不景气时期.I feel I'm stagnating in this job.我觉得我干这份工作没什麽前途....
有些段落他演奏得异常徐缓，听上去有些忧伤。He plays some passages so slowly that they become lugubrious.最后两章中的很多说法是对前面段落的呼应。Many phrases in the last two chapters echo earlier passages.段落的长度取决于它所传达的信息。The length of a paragraph depends on the i...