Clay minerals in a rock called Esperance clearly indicate that neutral water flowed across the rock some time in the first billion years of its existence.
一块名为“狮石”(Esperance)的岩石里,其中的粘土矿物表明在这块岩石最初的10亿年中的某个时刻时在,曾有中性水从它上面流过。 。
Begin in neutral spine, exhale and rock pelvis posteriorly so low back or waistline touches mat.
从脊柱中立位开始,呼气并且收紧骨盆,使下背部及腰线接触垫子。
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