单词	backup relay
释义	backup relay noun : a secondary relay to protect a power system against faults in the event of failure of the primary relay to function as desired Word History First Known Use 1950, in the meaning defined above
随便看	goofing around goofing off goofing on goofing up goofproofed goofprooffed goofprooffing goofproofing goofproofs goofs goofs (around) goofs (off) goofs (up) goofs around goofs off goofs on goofs up goofy goofy-foot goofy-footer goofy-footers goofy-foots goog google googleable

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。