basin perimeter
常见例句
- Orange splotches around the basin's perimeter are now thought to be volcanic vents, new evidence that Mercury's smooth plains are indeed lava flows.
盆地邊緣的橘紅色亮斑，現在普遍被認爲是火山口，而這也是支持水星平滑區可能是巖漿流域的 新証據。
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