vulnerability       
noun [ U or C ] uk/ˌvʌl.nər.əˈbɪl.ə.ti/ /ˌvʌn.rəˈbɪl.ə.ti/ us/ˌvʌl.nɚ.əˈbɪl.ə.t̬i/
 脆弱性;脆弱之物
the quality of being vulnerable (= able to be easily hurt, influenced, or attacked), or something that is vulnerable
  You want a doctor who understands the patient's vulnerability. 您需要一位了解患者脆弱心情的医生。 
 Those who organized the attacks exploited vulnerabilities in the nation's defences. 那些组织袭击的人利用了该国防御上的弱点。 
 See: vulnerable
 - More examples
 - This country has the infrastructure to address our energy vulnerability.
 - She has recently lost her mother, increasing her emotional vulnerability.
 - The vote exposed vulnerabilities in the election process.
 - The characters show their fears and vulnerabilities.