只是在仅几十年中才有了很大的变化，我就是把在这几十年花在海面和海下，但它仍然是一个令人惊奇和丰富的地方，要小心它甚至可能会变得尤其是这样。
Much has changed just in the few decades that I have spent on and under the sea, but it remains a wondrous and enriching place, and with care it can become even more so.
弹性体是聚合物的一个种类，它的应力-应变曲线表明其变形是完全弹性的，即很低的应力变化就会产生很大的可回复应变。
Elastomer is a class of polymers whose deformation displayed by strain-stress curve is totally elastic i. e. large recoverable strains produced at low stress levels.
弹性体是聚合物的一个种类，它的应力-应变曲线表明其变形是完全弹性的，即很低的应力变化就会产生很大的可回复应变。
Elastomer is a class of polymers whose deformation displayed by strain-stress curve is totally elastic i. e. large recoverable strains produced at low stress levels.
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