some people may have the idea that once one understands the causes, the cure will rapidly follow.
有些人可能有这样一种想法：一旦（人们）了解了病因，很快就能找到治疗方法。
The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells.
研究人员在20 世纪70 年代初期取得巨大进展——当时这些研究人员发现致癌基因在正常细胞中并不活动。
造句：Many city residents complain that it is so few buses in their city that they have to spend much more time waiting for a bus， which is usually crowded with a large number of passengers.
1、some people may have the idea that once one understands the causes, the cure will rapidly follow.
有些人可能产生这样一种想法，即一旦此人了解了事件的来龙去脉，那么此问题就迎刃而解了。
2、The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells.
早在1970年初期，当研究者发现致癌基因，即引发癌症的基因在正常细胞中处于休眠状态时，他们就取得了长足的进步。
