《古兰经》劝告人们在朝圣前斋戒，以作为一种补赎。The Koran recommends fasting as a penance before pilgrimages.他们在某些天斋戒.They fast on certain days.到了星期五和斋戒日、尤其是大斋期时，这个菜式非常受欢迎。It was a favourite meal on Fridays and fast days, particularly during Le...
α粒子是从天然放射性蜕变得到的带正电的氦核.Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.粒子 —— 氦核 —— 正通过试管被抛出, 从而在试管中形成人造迷雾.Alpha particles -- helium nuclei -- were being hurled through the tube...
The offer could not have come at a more opportune moment.那个建议提得正是时候。I believe that I have arrived at a very opportune moment...我想我到得正是时候。Her arrival was very opportune.她来得非常及时.an opportune moment适当的时候The invention of the...