translation.en: And it's true, scientists sometimes throw terms out as linguistic place fillers -- dark energy or dark matter, something like that -- until we figure out what it is, we'll call it this.
translation.zh: 反之，确实科学家有时会丢出一些名词当作 语言学的填空词--暗能量或暗物质或其它类似的等等。 直到我们明白这是什么之前，我们就暂时称它为这个，