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To examine something carefully to find out what is wrong.
Arriving at a place.
Moving away from a place.
To give official permission for a plane to leave or enter.
Official permission to do something.
The thing you think is most important.
To tell someone to do something.
Something you are told to do.
To change to another direction or place.
Something that makes you change direction.
To move from a higher level to a lower one.
A move from a higher level to a lower one.
To move from a lower level to a higher one.
A move from a lower level to a higher one.
adj. taking the place of
To say it is OK to do something.
Something that lets you do something.
To understand wrongly.