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in preparation for为……做准备（最常用搭配）
例：She’s studying hard in preparation for the exam. -
make preparations for为……做准备（强调具体行动）
例：They are making preparations for the wedding. -
under preparation正在准备中
例：The report is still under preparation. -
final preparation最后的准备
例：We’re in the final preparation stage before launch. -
adequate preparation充分的准备
例：Success requires adequate preparation. -
mental preparation心理准备
例：He needed some mental preparation before the interview.