The explanation may be something rather more mundane: plain old carbon dioxide.
但是对这件事的解释可能是很简单的东西：极普通的二氧化碳。
The merchant took a plain gold ring from his carpet and engraved something on it.
那位商贩从地毯上拿起一枚普通的金戒指，在上面刻了些什么。
And the handsome young men must have something to live on as well as the plain.
英俊的男人和相貌平常的男人一样都得得靠钱过活啊。
Please show me something more plain and quiet.
请给我看些简单朴素的料子。
Please show me something more plain and quiet.
请给我看些简单朴素的料子。
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