If such materials became generally available to the optics industry the payoffs from such a breakthrough would be enormous.如果这些材料能够普遍用于光学产业，那么这一突破带来的收益将非常巨大。This part of the subject is called physical optics.这部分内容叫做物理光学....
Refractory children , lunatics, and criminals may require authority, and may need to be forced to obey.对倔强的儿童, 精神病人以及犯罪的人,需要使用权力, 或者需要强迫服从.The number of lunatic is as finite as the number of lunatics.疯狂的书籍和疯狂的人一样数量有限.All...
He criticized them very freely, in a positive, off - hand way.他无拘无束地批评他们, 常常脱口而出,语气却又十分肯定.The men talk as cheerfully as ever; jests are bandied about freely.男人们像往常一样高兴地聊着，彼此间随意开着玩笑。Not giving or expending freely; sparing...
Mr. Blake's secretary is always on hand when he appears in public.布雷先生在公开场合露面时,他的秘书总在场.Please be on hand at 12 sharp.请在十二点整到这里来.Give away any food you have on hand, or lock it up and give the key to the neighbours.把...
The machine can hammer out metal very thin.这台机器能把金属锤得很薄.After the major agreement, we had to hammer out the details.主要契约通过后我们必须苦思出细节.Can you hammer out the dent in the side of my car?你能敲平我车子侧边的凹痕 吗 ?...