The cheaper FNDs fluoresce roughly as well as those produced with an electron beam.此种廉价FND所发的荧光与用电子束生产的FND所发荧光大致相同.The radar beam can track a number of targets almost simultaneously.雷达波几乎可以同时追着多个目标.A high quality beam ha...
Visitors are shown an audio-visual presen-tation before touring the cellars.参观酒窖前，游客们先观看了有声的视频介绍。As the buildings rocked under heavy shell-fire, he took refuge in the cellars.当一座座楼房在猛烈的炮火中颤动摇晃时，他躲进了地下室。Some families stoc...
将炉火调小，用文火炖调味汁。Turn the heat down so the sauce simmers gently.炉火中迸出的煤块烧着了地毯。Coal fell out of the fire, and burned the carpet.他正和艾伯特在书房的炉火旁下国际跳棋。He was in the study playing draughts by the fire with Albert....