中文字幕精品视频在线|中文字幕在线观看|亚洲v日本v欧美v在线播放|伊人网中文字幕

<nav id="3u6n6"></nav><samp id="3u6n6"><tr id="3u6n6"><track id="3u6n6"></track></tr></samp>
    <legend id="3u6n6"><fieldset id="3u6n6"></fieldset></legend>

      
      

    1. universe

      英 ['ju?n?v??s] 美['jun?v?s]
      • n. 宇宙;世界;領(lǐng)域

      英英釋意


      1. everything that exists anywhere;
      "they study the evolution of the universe"
      "the biggest tree in existence"
      2. (statistics) the entire aggregation of items from which samples can be drawn;
      "it is an estimate of the mean of the population"
      3. everything stated or assumed in a given discussion