extralityn.治外法权extraadj.额外的n.额外之物；临时演员adv.特别地Extra Low Interstitial间隙式固溶元素极少的材料extrapunitive reaction责他反应extradural nerve block硬膜外神经阻滞extracellular polymers胞外聚合物Extra fine zinc powder超细锌粉extrabranchial chamber围鳃腔extraterrestrial noise地球外噪声Extrapetrosal drainage颞骨岩部外引流extra-judicial crime司法外犯罪extraterritorial crime域外罪行

1. The evening paper has an extra today.
   这份晚报今天有号外。