The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.

蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。

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Three, Ji'nan large billboard is released long period, is durable, all-weather release.

济南大型广告牌是发布时段长，是耐久地、全天候发布的。

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In this paper, we develop a two-period model in which a producer decides to sell or rent his durable good having a nondurable good.

文章建立了一个两期数学模型，其中一个耐用品厂商有可能还拥有一种非耐用品。

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Non-durable goods orders also posted the steepest decline since that period, falling 2.0%.

WSJ: Jobless Claims Increase

Because of technology, there are less people needed to manufacture and service the durable equipment that we use because this stuff is working better and for a much longer period of time.

FORBES: 9.2% Unemployment? Blame Microsoft.

Most think a prolonged period of easy monetary policy and a slow release of pent-up demand for durable goods and homes can yield growth of at least 3%.

ECONOMIST: The American economy