单词	sealed-beam
释义	sealed-beam adjective ˈsēl(d)-ˈbēm  : being an electric lamp with a prefocused reflector and lens sealed in the lamp vacuum Word History First Known Use 1939, in the meaning defined above
随便看	Ostracoidea ostracon ostracophore Ostracophori ostracophorous Ostraeacea ostraka ostrasia Ostrava ostre- Ostrea ostreaceous ostreae ostreas ostreger ostregers ostrei- ostreiculture ostreiculturist Ostreidae ostreidaes ostreiform ostreo- ostreodynamometer ostreoid

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。