入射角等于反射角.The angle of incidence equals the angle of reflection.冬季小入射角阳光的透射可以增加室内亮度.Low - angle winter sunlight penetration can give rise to glare.这种情况中的入射角是三十度.The incident angle in this case is 30 degree....
He has been slaving in the garden for hours.他在花园里干了数小时.He stares at the hundreds of workers slaving away in the intense sun.他凝视着在炎炎烈日下辛苦劳作的几百名工人。When you're busy all day the last thing you want to do is spend hours ...
a truthful answer如实的答复He was not always truthful.他并非总是说真话。We've all learnt to be fairly truthful about our personal lives...我们都学会了要非常坦诚地对待自己的个人生活。The trader was truthful and without deceit.这位商人很可信,童叟无欺.Most religion...