势族
influential family; powerful clan
十足
ample; complete; hundred percent; a pure shade (of some color)
士卒
soldier; private (army)
士族
land-owning class, esp. during Wei, Jin and North-South dynasties 魏晉南北朝|魏晋南北朝
失足
to lose one's footing; to slip; to take a wrong step in life
始祖
primogenitor; founder of a school or trade
一失足成千古恨
a single slip may cause everlasting sorrow (idiom)
国际海事组织
International Maritime Organization