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.
盆地边缘的橘红色亮斑，现在普遍被认为是火山口，而这也是支持水星平滑区可能是岩浆流域的 新证据。
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