To propel something in a particular direction means to cause it to move in that direction.
例句
The tiny rocket is attached to the spacecraft and is designed to propel it toward Mars.小火箭捆绑在宇宙飞船上，用于推动飞船飞向火星。
VERB
推动；激励；驱策
If something propels you into a particular activity, it causes you to do it.
例句
It was a shooting star that propelled me into astronomy in the first place...最初是一颗流星促使我从事天文学。He is propelled by both guilt and the need to avenge his father.他受到内疚感和为父报仇之心的双重驱使。
英汉词典释义
vt.
推进; 推动
A volcano erupted and propelled rocks high into the sky.火山爆发, 把无数的石块抛向天空。