1 to ascertain

2 to act on

3 to criticize

4 to pass on

5 classifier for batches, lots, military flights

6 tier (for the ranking of universities and colleges)

1 to criticize

2 criticism

3 classifier: 个 gè

1 large quantities of

1 to examine and approve

2 to endorse

1 to approve

2 to ratify

1 to get right to the heart of the matter (idiom)