책 Total English - 고급 - 단원 1 - 레슨 1

to learn to perform or use a skill or ability thoroughly and completely

to intentionally not take action or not address an issue or problem, especially when one should have, often resulting in a negative consequence

to acquire a new skill or language through practice and application rather than formal instruction

to mix up, distort, or confuse information, typically in a way that makes it difficult to understand or use

an excessive amount of something that exceeds normal limits or capacity

to make random, meaningless sounds

difficult or impossible to understand or comprehend due to lacking clarity in speech, writing, or communication

the spoken form of a language specific to a certain region or people which is slightly different from the standard form in words and grammar