🐎：
This priority might also often lead them to be less vigilant in streamlining their services—eliminating duplication between departments, for instance.
提出duplication departments是为了举例说明如何less vigilant in streamlining service，也就是优化服务流程=提效率？
large body strikes =>low gravity
paradox:many basins have no low gravity.
scientists speculate:[early]moon elastic=> gravity compensation(no low gravity)
[later]moon stiff and cooler=> gravity compensation may not occur (low gravity)
C，answer the question of whether those traces still exist , presuming such life forms left fossil traces to begin with.
presuming(that), 表示假设某事发生，如果……，用法类似if，后面跟从句。它不是伴随状语，是个从属连词，跟的是句子，presuming本身没有逻辑主语。
同样用法的还包括providing (that)，provided (that)， assuming (that)
"denser material from the Moon's mantle rose up beneath the impactors almost Immediately, compensating for the ejected material and thus leaving no low gravity anomaly in the resulting basin“
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注意阅读节奏。
weaken：找他因。