Commemorations of All Saints and Martyrs were held by several churches on various dates, mostly in springtime.

几个教堂在不同的日期举行了所有圣徒和烈士的纪念活动，主要是在春天。

Let us take the prospective values of copper at various future dates, a series which will be governed by the rate at which redundancy is being absorbed and gradually approaches the estimated normal cost.

让我们以铜在未来不同日期的预期价值为例，这一系列将由冗余被吸收的速度决定，并逐渐接近估计的正常成本。