| 释义 |
phrasebe booked up1. be booked up if a trip, concert, course etc is booked up, there are no more seats or places available for it because other people have already taken them all: We'd hoped to go to the Caribbean, but all the flights were completely booked up. The popular plays are always booked up well in advance.2. be booked up informal if a person is booked up, they are busy and have no time to do something or to accept more work: I had to refuse their invitation because I was already booked up. Some of the top singers are booked up for years in advance.
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