This is the 5638th most frequent Chinese word.
助推器
Booster.
助推器 is used in this sentence as a device or mechanism that aids in boosting or stabilizing the flight of a rocket.
这个实验需要一个强大的助推器来稳定火箭飞行。
This experiment requires a powerful booster to stabilize rocket flight.
助推器 metaphorically refers to a factor or driving force that accelerates the process of social reform in this context.
社会改革的助推器是公众的支持和参与。
The booster for social reform is public support and participation.
助推器 in this sentence symbolizes the driving forces or motivations behind athletes' performance.