be on guard against

be on guard against 基本解释

提防警惕

be on guard against 用法和例句

1、You should be on guard against pickpockets.

你要谨防扒手。

2、Governments should always be on guard against danger.

政府应当总是对危险有所预防。

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

防范坏人破坏捣乱

4、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。

5、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。

6、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。

7、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。

8、We Should Be on Guard Against the Tendency of Teaching Science in Primary Schools as an Academic Subject

要警惕小学科学教育的过度学术化倾向

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

against prep. （表示态度）反对；（表示方位）紧靠着…；（表示对象）对…不利；以…兑换 conj. 在…之时；在…之前