英语听力精选进阶版 13757（在线收听）

Worst place to be a mother 

Vocabulary

nutrition

the process by which eating food makes someone healthy

welfare

health and safety

chronic

long-lasting

undermines

weakens

vicious cycle

a bad situation that repeats itself

vulnerable

weak and easily harmed

epicentre

central point

front-line

important, actually doing the work

measure

action

ranks

positions, scores