The phrase 'let down' can be defined in a number of ways. Let down means to disappoint or fail to fulfill the expectations but can also mean to to lower, deflate or untie.
The definition of dishevelled is to let down.
An order or command. It is Latin for "let it be so", and is well known from the Latin phrase "Fiat Lux" which means "Let there be light".
mathematical phrase
Definition of Maximising by Kayors Let me present an illustration to explain this: One often uses the phrase of "maximise profits" in economics. The term maximise or maximising here means to keep profits as high as possible.
Let it be = Sit
I'm guessing it means, "I'm not into you but I'm trying to let you down easy."
The same as for "binary tree". Enter that phrase in Answer.com for the definition.
repeated phrase or motif
ygiutuyguhyj
It means not overpaid.
This is a mock Latin phrase meaning: Don't let the bastards grind you down! I used Wikipedia to answer part of this question.
There isn't a specific definition for this phrase.