1 (long) time

2 (long) duration of time

1 how long?

1 quite a while

1 not long (after)

2 before too long

3 soon

4 soon after

1 for a very long time

1 I have been looking forward to meeting you for a long time (idiom)

1 I've admired your reputation for a long time (idiom); I've been looking forward to meeting you.

2 It's an honor to meet you at last.

1 long illness makes the patient into a good doctor (idiom)

1 well tested (idiom); seasoned

2 veteran

1 lit. that which is long divided must unify, and that which is long unified must divide (idiom, from 三國演義|三国演义[Sān guó Yǎn yì])

2 fig. things are constantly changing