Most systems fall back to displaying a placeholder of some sort when an appropriate character can't be found in the current font.

当前字体中找不到某个适当的字符时，多数系统会显示一个某种占位符。

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[font=Verdana]UNTIL recently, nuclear power seemed to be making its way back into public favour in Germany.

不久以前，核电在德国仿佛已重获公众的支持。

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When we are through with the font, we should restore the old font back into the device context.

当我们不使用这个字体的时候，我们应该在设备环境中恢复它以前的字体。

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One programmer has taken it upon himself to provide a fix for the change to bring the font size back to less-squinting normal.

FORBES: Is Facebook's New Font Size Too Small? Try Facebook Font Fixer

Like a nuclear missile silo, my agency's Vatican file had its own doomsday file - a hardbound manila folder on which a typewritten sticky label had emblazoned in telex font capitals: WHAT TO DO IN CASE THE POPE DIES. While many of the instructions dated back to 1961 and could be safely ignored, it was still an interesting study in panic.

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