然而钛作为一种惰性金属，缺乏足够的生物活性。

However, as an inert metal, the biological activity of titanium is inadequate.

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为了操作容易，该金属呈固体小块形式并置于由抗腐蚀金属（如钛或不锈钢）制成的惰性金属筐内。

For ease of operation, the metal is in the form of nuggets and placed in an inert metal basket made out non-corroding metal (such as titanium or stainless steel).

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研究这种药草的农学家发现，它会产生大量的组氨酸，这种氨基酸在试管溶液中会使这些金属具有化学惰性。

Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.

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So platina is like a diminutive of silver, but we now know that platinum is far superior to silver It is far more noble. It has a higher melting point, a higher chemical inertness, a fantastic metal.

所以普拉塔就像一个小小的银，但我们现在知道普拉塔比银要好很多,更为珍贵，熔点更高，化学惰性更高，是一种非常不可思议的金属。

麻省理工公开课 - 固态化学导论课程节选