"Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of vitamin D deficiency in our population, not only in the U.S.,but worldwide" Vitamin D helps our bodies absorb calcium and helps form and maintain strong bones.

VOA: standard.2010.05.28

because I know that it's definitely a hot topic.

因为我知道这个话题太热门了。

生物克隆是热点问题 - SpeakingMax英语口语达人

If you can interfere with any stage in RNA processing you can stop a gene from being expressed and this is a very hot topic in molecular biology now and human therapeutics.

如果你能干扰RNA加工的任何一个阶段,你就能阻止一段基因的表达,这也是当今分子生物学,和新型疗法中非常热门的话题

耶鲁公开课 - 生物医学工程探索课程节选