单词	Is it a formal affair?
释义	Is it a formal affair? 那是正式场合吗?
随便看	middle and high age population middle and high frequency middle and high school students middle and high seam middle and high sulfur coals middle and high vocational school middle and high voltage Middle and inner ear middle and late Holocene middle and late Ming Dynasty middle and late phase hepatocarcinoma middle and late Proterozoic middle and later Ming dynasty Middle and later periods middle and late Tang Dynasty Middle and Late Tang society middle and long distance Middle and long distance race middle and long distance run middle and long distance runners middle and long distance running middle and long-distance running middle-and-long distance running middle and long race middle and long races