Most fingerprints can't be seen to the eye and require a chemicaldevelopment process in order to make them shown.
大多数指纹是肉眼看不见的，需要经过化学显影过程才能显示出来。
2
Some researchers are convinced that ingesting the chemical can interfere with development of the reproductive and nervous systems and possibly promote cancer.
一些研究者认为，摄取这种物质会影响生殖系统和神经系统的发育，并有可能诱发癌症。
3
Therapeutic solutions that target the behavioral, chemical, and genetic components of the disease are all in development.