"So you can see that many of us are below that threshold level that we believe confers protective benefits," says Arendash.

“所以你可以看到，我们许多人的摄入量低于能收到保护效果的阈值水平，”阿里达什说。

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In this case, many interesting phenomena of excitation and photoionization can be observed, for instance, muti-photon ionization, above threshold ionization, tunnel ionization and so on.

这样，我们就可以观察到一些新的现象，如多光子过程，阈上电离，隧道电离等。

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