宇宙速度 yǔ zhòu sù dù

DEFINITIONS

  1. escape velocity

CHARACTERS

宇 yǔ
HSK 6
house; building, structure; eaves
宙 zhòu
HSK 6
time as concept; infinite time
速 sù
HSK 4
quick, prompt, speedy
度 dù
HSK 4
degree, system; manner; to consider