1）翻译下面的句子：

David 超越了他的同班同学，只用两年半就拿到了本科学位。

David leapfrogged his classmates by obtaining his bachelor's degree in two and a half years.

（参考翻译：David leapfrogged his classmates and obtained his bachelor's degree within just two and a half years.）

2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。

场景 ： K12在线教育中vipkid脱颖而出

例子：In the cutthroat competition of K12 online education, vipkid leapfrogged to the forefront of the red sea because of its smart marketing strategy and refined products.