放过投降的城市是成吉思汗的原则，但是用头盖骨堆积起来的金字塔是人民抵抗蒙古人残暴行径的无声见证。
It was Genghiz Khan's rule to spare cities which surrendered but pyramids of skulls bore mute witness to the Mongol ferocity where people resisted.
该研究还显示了同一化合物减少了老年小鼠的骨丢失，井防止了已知会在骨质疏松患者身上发生的骨中脂肪堆积。
The study also showed, however, that the same compounds decreased bone loss in older mice and prevented the accumulation of fat in the bones, which is known to occur in humans with osteoporosis.
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