The moon period has to be a full moon or nearly full.
月亮的周期必须是满月或接近满月。
Your survey period has to be longer.
您的调查期间要更长的时间。
In America, the period of huge productivity gains in transportation may be almost over, but in most countries the process still has far to go.
在美国,交通运输业生产率大幅提高的时期可能即将结束,但在大多数国家,这一阶段仍有很长的路要走。
The area where the flutes were found has been linked to the Aurignacian culture within the period of history known as the Upper Paleolithic.
VOA: special.2009.08.18
The interest rate has units of time, so I have to specify a time period over which I'm measuring an interest rate.
不同时间段有不同的利率,因此我必须在不同的时间段,细化不同的利率
Suppose someone has a contract that promises to pay an amount each period over a number of years.
假设某人有一份合约,承诺在数年内的不同时段内分开支付
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