<p class="p1">[ss_player]<span class="Apple-converted-space"> </span></p> <p class="p1"><span class="s1"><a href="https://www.youtube.com/hashtag/covid">#COVID</a></span><span class="s2">-19 </span>的<a href="https://www.youtube.com/hashtag/%E7%96%AB%E8%8B%97%E7%8F%BE%E5%9C%A8%E6%98%AF%E5%A6%82%E7%81%AB%E5%A6%82%E8%8D%BC"><span class="s1">#</span><span class="s3">疫苗現在是如火如荼</span></a><span class="s2"></span>,我們來講講人體的<a href="https://www.youtube.com/hashtag/%E5%85%8D%E7%96%AB%E7%B3%BB%E7%B5%B1%E6%98%AF%E5%A6%82%E4%BD%95%E5%B7%A5%E4%BD%9C%E7%9A%84"><span class="s1">#</span><span class="s3">免疫系統是如何工作的</span></a><span class="s2"></span>,以及<a href="https://www.youtube.com/hashtag/%E7%96%AB%E8%8B%97"><span class="s1">#</span><span class="s3">疫苗</span></a><span class="s2"> </span>的相關知識和研究。</p>