优生学具有生物学上的意义.Eugenics has a biological significance.对 “ 积极 ” 优生学和 “ 消极 ” 优生学往往加以区分.A distinction is often made between " positive " and " negative " eugenics.消极优生学的范例是试图破坏一种对人体有害的隐性基因.An example of negative eugenics woul...
a crown studded with gems镶有宝石的皇冠The apt citations and poetic gems have adorned his speeches.贴切的引语和珠玑般的诗句为他的演说词增添文采.The Dunhuang frescoes are gems of ancient Chinese art.敦煌壁画是我国古代艺术中的瑰宝....
筛窦炎在儿童中常并发眼眶蜂窝织炎及脓肿.Ethmoid sinusitis is frequently complicated in children by orbital cellulitis and abscess.节律的这种正常变化称为窦性心律失常.This normal variation in rhythm is known as sinus arrhythmia.窦性心动过缓是心率低于60次.Sinus bradycardi...
They were very modern Tories in almost every sense.从几乎所有意义上说，他们都属于非常新潮的保守主义分子。The Tories will have to supply a more comprehensive prospectus than they have so far.它实际上标志着一场遥遥无期的政治大选拉开了序幕.Steel factories edible fungus fac...