His entrance was announced by a buzzer connected to the door.他刚一进去，与门相连的门铃便嗡嗡作响。The buzzer suddenly responded in a long blast of sound.蜂鸣器突然相应地发出了一声响亮的长鸣。The buzzer went off at eight o'clock.蜂鸣器在8点钟时响了....
We pressed the buzzer in our cabin and a steward arrived instantly.我们按了客舱的呼叫器,一个乘务员马上来了。The buzzer suddenly responded in a long blast of sound.蜂鸣器突然相应地发出了一声响亮的长鸣。The buzzer went off at eight o’clock.蜂鸣器在8点钟时响了。Two wiring...
I've always had a loud mouth, I refuse to be silenced.我一贯大声说出自己的想法，不会迫于压力而一言不发。I refuse to act that way when my kids fight.我的孩子们打起架来时，我不会那样做。Those who refuse to repent, he said, will be punished.那些拒不悔改的人，他说，将会受到惩罚。...
MgO改性提高对二乙苯选择性最为明显.Silylation, P modification and MgO modification can improve p - DEB selectivity greatly.指出高效、节能的分子筛吸附分离法是分离二乙苯的最佳选择.The best choice for separating diethylbenzene is the adsorptive separation by zeolite...