megaroentagen

例句：

1. 1. The construction of the new airport is a megaproject that will transform the city.
   新机场的建设是一个巨型项目，将改变这座城市。
2. 2. The discovery of this megastructure has sparked excitement among scientists.
   这个巨大结构的发现激发了科学家的兴奋。
3. 3. The giant dinosaurs were part of the megafauna that roamed the earth millions of years ago.
   巨大的恐龙是数百万年前漫游地球的大型生物的一部分。