1 guarantee

2 to guarantee

3 to ensure

4 to safeguard

5 to pledge

6 classifier: 个 gè

1 clear-cut

2 definite

3 explicit

4 to clarify

5 to specify

6 to make definite

1 correct

2 proper

1 really

2 indeed

1 definite

2 certain

3 fixed

4 to fix (on sth)

5 to determine

6 to be sure

7 to ensure

8 to make certain

9 to ascertain

10 to clinch

11 to recognize

12 to confirm

13 OK (on computer dialog box)

1 in support or witness hereof (idiom)

1 absolutely true (idiom)

2 manifold

3 true from many points of view

1 the dead cannot testify (idiom); dead men tell no tales

1 established and irrefutable (idiom)