参考例句

1. Be on guard against those who are jealous of your success.

   要提防那些嫉妒你的成功的人。

2. He then spoke earnestly to the Delaware who stood on guard .

   然后，又对守卫在门口的特拉华人匆匆嘱咐了几句。

3. We must be on guard not to let the enemy spies worm in.

   我们必须警惕,不让敌特钻进来。

4. Against that dreadful design the Church stands ever on guard .

   对于这个可怕的计谋，教会是时刻提防的。

5. And right off I was on guard against Mencken's books.

   我马上就对门肯的书警觉起来了。

6. Being doubled up on guard isn't so good either.

   弯腰屈背地在这儿放警戒，也不见得就那么好受。

7. The man below there are always on guard .

   下面的人又总是片刻不离地守着。

8. The soldiers are on guard .

   战士们在站岗。

9. He is most free from danger, who even when safe, is on guard .

   居安思危，最为保险。

10. Be on guard against conceit impetuosity; guard against pride and haste

    戒骄戒躁

同义词

• on one's guard(p)
• on your guard
• upon one's guard(p)