Cách sử dụng
The expression "at an unearthly hour" means at a very odd or unexpected time, usually at a time when most people are sleeping or not awake yet. For example, if someone says "I had to wake up at an unearthly hour to catch my early morning flight," it means they had to get up very early, possibly even in the middle of the night. This expression is commonly used when talking about events or situations that happen at a time that is inconvenient or unexpected.