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。
A minute ago you told us you never saw the mark on the stone properly!
一分钟前，你还说过你从没真正看清那石头上的标志！
The stone glanced the wall and left a mark on it.
石子擦过墙面，留下一道痕迹。
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。
She rubbed the key on a stone, but she could not rub the mark away.
她用石头去磨钥匙，但是仍是无法抹掉这个印记。
Mark Newsome was stone-deaf for the past twenty years.
马克·纽瑟姆耳朵全聋了二十年。
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 economic analysis of movable mark stone and cement mark stone is given.
最后对活动标石与水泥标石进行了经济分析。
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。
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。
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