be on guard

be on guard 基本解释

防范；惕励；惕历

词组短语

1、be on guard against 提防警惕

be on guard 用法和例句

1、You should be on guard against pickpockets.

你要谨防扒手。

2、He told us again and again to be on guard.

他一再要我们提防。

3、Be on guard when somebody flatters you.

有人奉承你时，一定要当心。

4、Governments should always be on guard against danger.

政府应当总是对危险有所预防。

5、be on guard against bad elements making trouble and engaging in sabotage

防范坏人破坏捣乱

6、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。

7、And I will be on guard against two evils hastiness and indecision.

而且我将防范两个邪恶草率, 优柔寡断。

8、The police warned people to be on guard against burglary during the festival.

警察提醒人们假日里要注意提防盗窃。

9、The rancher must always be on guard against the dangers that nature can create.

牧场主必须时刻防备可能发生的自然灾害。

10、The police warned people to be on guard for pickpockets during the Christmas rush.

警察警告人们在圣诞购物高潮时谨防小偷。

重点词汇

guard n. 守卫者, 警戒, 护卫队, 防护装置 vt. 保卫, 看守, 当心 vi. 防止, 警惕, 警卫, 看守