猪肉经过化学处理以延长保存期。

The meat is chemically treated to extend shelf life.

《柯林斯英汉双解大词典》

更长的生存期就意味着就每克的冷却量而言，平流层中的硫比底层的硫多约25倍。

This longer life means that in terms of cooling per gram, sulphur in the stratosphere outdoes the lower-down stuff by about 25 to 1.

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数据的生存期绑定到会话生存期。

Lifetime of the data is bound to the session lifetime.

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