The definition of operator homeomorphism mapping , together with its characterizations, is given in this paper.在算子开集理论中给出了算子同胚映射的概念, 得到了算子同胚映射的若干性质....
她犹豫了一下，带着迟疑的微笑把手伸了出去。With some hesitation and an uncertain smile, she held out her hand.这个姑娘用迟疑的步子走进房间,用眼睛偷偷地来回瞟着克里费兰和梅德琳.The girl came into the suite with uncertain steps , peering from Cleveland to Madeline.犹豫迟疑的人,常把生命...
她毫不客气地叫那些烦人的摄影者“滚开”。She didn't hesitate to tell intrusive photographers to "naff off".“对呀！”博比惊奇地叫道。“你是怎么想起那件事的？”"That's right!" Bobby exclaimed in wonder. "How did you remember that?"她明白无误地叫他离她远远的。She told him ...
All the cacti were in flower, so that the desert was a riot of colour...所有的仙人掌都开花了，整个沙漠里五彩缤纷。spiky plants, such as cacti带刺的植物，如仙人掌There we could see nothing but cacti.那里除了仙人掌我们什么也看不到.All the cacti were in flower, so that...
昨晚, 我们秘密地举行了一次会议.Last night, we held a meeting in secret.他们已秘密地接过头, 事先曾采取了周密的防范措施.They had had one secret meeting, with elaborate precautions.汽车正在秘密地用卡车运回.The car is being returned by truck, under wraps....