邓布利多示意哈利走到岩石的边缘，岩石上有许多可供踩脚的参差不齐的凹缝，通向下面那些在悬崖周围、半露出海面的巨型卵石。
Dumbledore beckoned Harry to the very edge of the rock where a series of jagged niches made footholds leading down to boulders that lay half-submerged in water and closer to the cliff.
半球壳体轴向下部设有连通圆缺凹腔的吸收腔。
The axial lower section of the hemisphere case is equipped with the absorption cavity which connects with the segmental concave cavity.
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