The dead plankton on the bottom must be preserved from oxidation.

在海底的浮游生物必须被保护起来以免遭氧化作用。

youdao

Some sporadic records preserved from the ancient literatures can hardly help people really understand the origin of numbers.

古代文献中保存下来的一些零星记载也无法让今人真正了解数的起源。

youdao

By means of this commercial intercourse Italy necessarily acquired those branches of knowledge and those arts and manufactures which Greece had preserved from the civilisation of ancient times.

意大利通过这些商业贸易往来必然吸收了不同支脉的文化、艺术以及因古代希腊文明所保留的生产工艺。

youdao

Yosemite was established upon the simple yet ground-breaking idea that wilderness should be preserved from commercial interests for the sustainable use and enjoyment of all people.

BBC: Birth and spread of the world��s national parks

The more promising candidates were then cooked up and injected into a test tube holding a notoriously resistant form of ovarian cancer preserved from years ago.

FORBES: Taxol's Next Stand

However, the gains in CRL and HUN appear more reflective of their strong quarterly earnings performances than any traction preserved from their initial buyout chatter.

FORBES: Life for Sale