她慷慨激昂地朗诵了这出戏中著名的开场白。She declaimed the famous opening speech of the play.说了几句开场白之后，他即宣布优胜者名单。After a few preliminary remarks he announced the winners.她的开场白十分风趣。She opened the speech with a real zinger....
Hydroquinone is an important chemical material and intermediate in industrial chemistry.对苯二酚是一种重要的化工原料和中间体.Market prospect and production methods for pyrocatechol and hydroquinone are reviewed.概述邻苯二酚、对苯二酚的市场前景、生产方法.Antio...
这一聚合物的性质目前是个商业机密。The nature of the polymer is currently a trade secret.聚合物及类似材料的价格会下降。The prices of polymers and suchlike materials will decrease.接著我们致力于找出能够减弱辐射的聚合物.Then we got involved with trying to find polymers that...