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。
Blue flags define the excavation perimeter, while yellow ones mark the location of fossils or stone tools.
蓝旗用来显示发掘地的周长，而黄旗用来标明发掘出化石或石制工具的地点。
Ancient cultures often modified natural rock formations or built stone monuments to mark the motions of the sun and moon, charting the seasons, creating calendars and monitoring eclipses.
原始文明经常用改造天然石群或修建石碑来记录太阳和月亮的运行和季节变化，创立历法和观测日食月食。
He requested that his family burn his body and erect a simple grave stone to mark his life.
他要求家里把他火葬，只立一块简单的墓碑。
Beyonce admitted following it for two weeks to drop one-and-a-half stone for the film Dreamgirls, and Jared Leto used it to shed the two stone he'd gained to play Mark Chapman in the film Chapter 27.
碧昂斯承认曾经为了出演电影《梦幻女郎》坚持用了两个星期的这种减肥法，结果减掉了21磅。杰瑞德 列托用这种方法减掉了出演《第27章》中的马克查普曼时增重的28磅。
When Mark Antony explains that Vorenus is a "stone wall Catonian" who believes they are committing a sacrilege, Caesar concedes that he may be right.
安东尼向恺撒解释沃伦·诺斯是一个“顽固的加图派”，他认为他们正在做的是悖理逆天的事情。
She rubbed the key with a cloth, but the mark did not go away. She washed the key in hot water, but the mark was not washed away. She rubbed the key on a stone, but she could not rub the mark away.
她就用布去擦钥匙上的记号，但是擦不掉，她用热水洗钥匙，记号还是洗不掉，她又在石头上磨钥匙，可是记号仍旧去不了。
The fabrication and installation of extension mark stones and detachable mark stones are presented. Finally, the economic analysis of movable mark stone and cement mark stone is given.
简介了伸缩型和分体型活动标石的制作及安装，最后对活动标石与水泥标石进行了经济分析。
The fabrication and installation of extension mark stones and detachable mark stones are presented. Finally, the economic analysis of movable mark stone and cement mark stone is given.
简介了伸缩型和分体型活动标石的制作及安装，最后对活动标石与水泥标石进行了经济分析。
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