在撞击过程中, 动量的变化是突然的,但非瞬时的.In a crash, momentum changes abruptly but not instantaneously.有时,在局部速度中可能出现瞬时脉动.Sometimes temporal fluctuation may take place inthe local velocity.它表示寻常光波前和非常光波前的瞬时轨迹.It represents the instantaneo...
社区广播电台和商业广播电台一直是有区别的。There has always been a difference between community radio and commercial radio.约翰逊医生和我一直试图增强他的体质。Dr. Johnson and I have been trying to build him up physically.他一直等到所有的行李都拿走了，但始终没看见葆拉的。He waited unti...
Their unit was shelling the German lines only seven miles away.他们的部队在炮轰仅有7英里之遥的德军防线。Out on the streets, the shelling continued.外面的街道上，炮火还在继续。We suffered weeks of heavy shelling.我们遭受了几星期的密集炮击。...
This fact shows that MTBE and ethanol retard the oxidation of alkanes.这表明,在燃烧的起始阶段,MTBE、乙醇有抑制烷烃燃烧的作用.Alcohol dehydrogenase An enzyme that converts ethanol into acetaldehyde ( ethanal ).醇脱氢酶:把乙醇转化为 乙醛 的酶.In Brazil nearly ...
他听收音机校准了他的表.He regulated his watch according to the radio.由于校准者的失误，图表里的数目并不准确。The amount was misstated in the table because of an error by regulators.我的表走快了，我得把它校准。My watch is faster, and I need calibrate it....
Get up off your backside and do some work!起来干点活儿吧！What he needs is a good boot up the backside!他需要的是在他屁股上狠狠踢一脚.Allegedly, backside abet is enigmatic general Beijing president.据说, 背后主使乃是高深莫测的普京总统.He gave the donkey a migh...