时空线索

The identification and study of the control factors that regulate gene expression at different stages are of great value to elucidate the mechanism of spermatogenesis and spermiogenesis. Such study can also provide foundation and cues to investigating the mechanism of infertility and immunological contraception.

作为体内高度分化的雄性生殖细胞，精子发生过程中经历了从形态到生化的复杂变化，在这一过程中有一系列的特定基因按严格的时空顺序转录和翻译，因此寻找和研究不同发育阶段的差异表达的基因，将有助于最终阐明精子发生的机理，并为控制生育和不育机理的探索提供新的线索。

His paintings possess a traceable thread within modern art. For instance, Morandi's world is expressed through isolated fragments. In Balthus' world, humans seem to drift, frozen in modern time space, and this kind of language can be traced back to Dutch paintings and great masters like van Dyck.

他的绘画在现代艺术之中存在着一条可以寻找的线索，譬如，在莫兰迪那里，世界是以孤立的片段感来显示的，在巴尔蒂斯那里，人物仿佛都是游离、静止在现实时空之中，而这种语言还可以追溯到尼德兰绘画以及凡·代克那样的古典绘画大师那里。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。