be on guard
英：[bi: ɔn ɡɑ:d] 美： [bi ɑn ɡɑrd]
be on guard 基本解释
释义防范；惕励；惕历；
be on guard 相关例句
双语例句
- Troops are on the alert against any possible aggression.
军队戒备着可能的来犯。
权威例句
BE ON GUARDBe on guardOn guard vehicle safety warning systemStrenthen the prophylaxis and treatment to AIDS and pevfect systems in order to be on guard to new public bealth eventHeating chamber with insulative shield panel and electric heating panels mounted on guard framesClip-on guardBe on Guard with Technical Risks and Managerial Mistakes in Electronic AdministrationBe on guard for Palmer amaranthBe on guard for white moldAs swine flu marches on, be on guard for other bacterial bugs
