He believes that as far back as 30,000 B.C., hunters may have used a system of notation, engraved on bone and stone, to mark phases of the Moon.
他认为，远在公元前30,000年以前，猎人可能会用一套刻在骨头和石头上的符号系统来标记月相。
The Achilles tendon is a strong fibrous cord that connects the muscles in the back of your calf to your heel bone.
阿基里斯腱是将小腿后部的肌群连接到跟骨的强健的纤维索。
1: Who got to use the family car was a bone of contention between Joe and Betty from the day they got back from their honeymoon.
原来Joe和Betty从蜜月回来的当天起就为了谁可以用家里那辆车争论不休。
Ingria – the northwestern tip of today’s Russia on which St Petersburg now stands – had been a bone of contention between the two countries for centuries, having passed back and forth between them.
茵格利阿——今天俄罗斯领土的西北端，圣彼得堡的所在地——在几个世纪里一直是两国争端的焦点，而所属权也在两国间来回交替。
Bone whistles, used as a type of flute, have been found dating back to 5, 000 BC.
用作笛子的骨哨早已出现在公元前5,000年。
In ancient times, mahjong is mostly bone surface bamboo back, to say the mahjong tiles is actually a combination of CARDS and dominoes.
在古代，麻将大都是以骨面竹背做成，可以说麻将牌实际上是一种纸牌与骨牌的结合体。
When he 'espied Jon Snow, Axell Florent tossed a bone aside, wiped his mouth with the back of his hand, and' sauntered over.
一看到琼恩·雪诺，亚塞尔爵士立刻抛掉鸡骨头，用手背一抹嘴，就逛了过来。
She was a bone-thin woman with a pretty face, dark eyes, and brown hair that hung down her back.
她是个漂亮脸蛋的单薄女人，黑眼睛，褐色的长发披落在背上。
It must take a person with a lot of back bone to become involved within an industry that involves a lot of knock backs.
在娱乐产业里打拼肯定会为一个人引来无数背后的议论和诋毁。
Even though only a old shabby little boat, a bare fish bone, a run-down body came back to the seaport finally, the old man won in his spirit.
最终，一条破烂的小船，一个只剩骨头的大鱼架，一副疲惫的身躯回到了海港，即便这样，老人在精神上还是胜利了。
Stem cells released from the bone marrow that do not reach a tissue simply home back to the bone marrow after some time.
那些从骨髓中释放出来的干细胞如果没有变成别的组织细胞，那麽，过一段时间后，它们会再次回到骨髓中。
Guided by a computerized mapping system and an endoscope, surgeons drill small holes in a bone at the back of the nose and through the dura.
经计算机定位系统和内镜指导，外科医生在鼻子的后方的骨头上钻几个小孔并穿过硬脊膜。
The isthmus, or pars interarticularis, is a small, thin segment of bone that connects the facet joints at the back of the spine.
峡部或称椎弓峡部，是脊柱背侧连接上下关节突之间的一段小而细的骨段。
The Belgian limped off in the first half of the draw at Aston Villa on Wednesday night and afterwards manager arsene Wenger feared the centre back might have broken a bone.
比利时人在周三晚上对维拉的比赛上半场受伤下场，此后温格担心他可能骨折了。
Another former patient said, "for the first year or so after treatment, I kept running back to my doctor every time I got a cold, begging for a bone marrow aspiration."
另一位曾经的患者说道：“治疗结束后大约一年的时间里，只要一感冒我就跑回去找医生，要求做骨髓穿刺。”
Another former patient said, "for the first year or so after treatment, I kept running back to my doctor every time I got a cold, begging for a bone marrow aspiration."
另一位曾经的患者说道：“治疗结束后大约一年的时间里，只要一感冒我就跑回去找医生，要求做骨髓穿刺。”
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