形容词

了解海关手续

肯定（BEING SURE）

1. 肯定的;有把握的;毫无疑问的
If you are certain about something, you firmly believe it is true and have no doubt about it. If you are not certain about something, you do not have definite knowledge about it.

2. 必然的;必定的;肯定的
If you say that something is certain to happen, you mean that it will definitely happen.

3. 确凿的；无疑的
If you say that something is certain, you firmly believe that it is true, or have definite knowledge about it.

4. 确实的;肯定的
If you have certain knowledge, you know that a particular thing is true.

5. 确切地;无疑地
If you know something for certain, you have no doubt at all about it.

6. 确保；保证
If you make certain that something is the way you want or expect it to be, you take action to ensure that it is.