<code id='2CF770FB54'></code><style id='2CF770FB54'></style>
    • <acronym id='2CF770FB54'></acronym>
      <center id='2CF770FB54'><center id='2CF770FB54'><tfoot id='2CF770FB54'></tfoot></center><abbr id='2CF770FB54'><dir id='2CF770FB54'><tfoot id='2CF770FB54'></tfoot><noframes id='2CF770FB54'>

    • <optgroup id='2CF770FB54'><strike id='2CF770FB54'><sup id='2CF770FB54'></sup></strike><code id='2CF770FB54'></code></optgroup>
        1. <b id='2CF770FB54'><label id='2CF770FB54'><select id='2CF770FB54'><dt id='2CF770FB54'><span id='2CF770FB54'></span></dt></select></label></b><u id='2CF770FB54'></u>
          <i id='2CF770FB54'><strike id='2CF770FB54'><tt id='2CF770FB54'><pre id='2CF770FB54'></pre></tt></strike></i>

          星星也有DNA?科学家们识别银河系中的星系际移民