1. 脆弱的;易受伤害的
Someone who is vulnerable is weak and without protection, with the result that they are easily hurt physically or emotionally.

1. capable of being wounded or hurt

e.g. vulnerable parts of the body

2. susceptible to criticism or persuasion or temptation

e.g. vulnerable to bribery
an argument vulnerable to refutation

3. susceptible to attack

e.g. a vulnerable bridge