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....
writing paper and envelopes信纸和信封The writing paper is impressed with school seal.信笺上有学校的印记.Drouet selected writing paper while Carrie went to change her dress.杜洛埃找信纸写回信的当儿,嘉莉去换衣服....
他在擅离部队之前是一名陆军少尉。He was a second-lieutenant in the army until he deserted.他因擅离职守受到了军法审判。He was court-martialled for desertion.部长警告说，任何擅离职守的公务员都会被立即停职。The minister warned that any civil servant not at his desk faced immedi...
现在我们能公开谈论以前讳言不提的艾滋病问题。We can now talk openly about AIDS which we couldn't before.她不喜欢别人给她提建议。She did not take kindly to being offered advice.请允许我再回到我刚才所提的观点。Let me just go back to the point I was making....