occasion n.场合,时机,机会,诱因,理...take occasion to 乘机...occasion of trouble 纠纷的起因...improve the occasion 因势利导...as occasion serves 当时机有利时...as occasion requires 在必要时...on the occasion of... 值此...之际...rise to the occasion 应付自如...on occasion 有时...on the occasion of 值此...之际...give occasion to 引起...
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