They're basically made up of debris left over from the origin of the solar system.
它们基本上是由太阳系起源时遗留下来的碎片组成的。
Nevertheless the republic's original money system lasted "for nearly two centuries, during which all that was admirable of Roman civilization saw its origin, its growth and its maturity."
尽管如此,共和国首创的货币体系持续了“近两个世纪,期间罗马文明的辉煌见证了它的起源、成长和成熟。”
The system USES a set of four microphones situated an inch apart to triangulate the origin of the gunshot.
这套系统采用四个相距一英寸的话筒来对枪击地进行三角定位。
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