Normally, the cumulated water in top cover is drained to cumulated water well by gravity drainage, in emergency situation, the water would be drained by the self-priming pump installed in gallery.

顶盖内积水正常情况下通过自流排水排至积水井，紧急状态下通过装在廊道内的自吸泵排水。

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It follows, that where the igneous basement is concealed by a sediment cover, the gravity anomaly may contain a high spatial frequency signal corresponding to the morphology of the buried basement.

意思就是说重力异常中频率比较高的信号可能与沉积层覆盖下的基底的起伏有关。

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Learning to ferociously fight, to dial up Beast Girl and fend for ourselves, takes us into the basement of our being, into a lower center of gravity far below the topsoil of the nice lady camouflage, the cover-girl veneer.

FORBES: Being Nice Can Kill You

This has allowed scientists to retrieve information about the Arctic Ocean region's gravity field, its surface circulation, and the thickness of its sea-ice cover.

BBC: Cryosat spots Arctic sea-ice loss in autumn