The straw mattresses are airing there.草垫子正在那里晾着.The researchers tested more than 20 mattresses of various materials.研究人员试验了二十多个不同材料的床垫.The results of the tests indicated that latex and polyurethane foam mattresses burned...
The skull bones fuse between the ages of fifteen and twenty-five...头骨在 15 至 25 岁之间长合。The patient's brain activity is monitored via electrodes taped to the skull.病人的大脑活动通过固定在其头骨上的电极进行监控。He cradled the baby in his arm...