guard against

US 
UK 
  • v.防止；加以预防；抵御
  • Web防备；同本义；关防
Simple Present：guards against  Present Participle：guarding against  Past Tense：guarded against  

E-C

E-E

Web Definition

v.
1.
防止;预防,加以预防;抵御
un.
1.
检点;珍惜