• 1. be on guard: 警惕 | 防备 | 防范 | 戒备
• 2. Be on guard against: 防范 | 小心防备 | 警惕
• 3. to be on guard: 防范

更多释义

• 1.At the outset, it seemed necessary to be on guard against the other two.
  一开始，似乎有必要提防另外两个。
  dict.yoduao.com
• 2.Two soldiers must be on guard all night.
  两名战士必须通宵警戒。
  dict.yoduao.com
• 3.Thus, you should be on guard against this confused mapping.
  因此，您应该谨防这种有混淆的映射。
  dict.yoduao.com

©2026 网易公司