[] a particular length of time时期；一段时间◆You can repay the loan over a period of two years.你可以在两年内偿还贷款。◆Revenues were down 8% on the same period last year.收入比去年同期下降 8%。◆The offer is available for a limited period only.这一出价仅在有限的一段时间内有效。◆This week is one of the busiest periods of the year.本周是一年中最繁忙的时期之一。accounting period cooling-off period pay period payback period recovery period reporting period