Typical LearningTime：一般预期目标受众使用或完成该学习对象所花费的大约时间或通常时间。
Educational.Typical learning time: Approximate or typical time it takes to work with or through this learning object for the typical intended target audience.
员工35%的时间花费在重复劳动上，大约是服务业的一般水平。
35% of staff time was being spent on repeating work, about the average for a service industry.
他们用了大约一个月的时间才弄明白如何启动这台设备。
It took them about one month to figure out how to start the equipment.
在上午这段时间美元上升了大约30个基点。
The dollar climbed about 30 basis points during the morning session.
他们都是大约同一时间离开的。
你看，我加入了这个团体，大学爵士乐队，乐队的练习时间大约就在晚饭的时候。
You see, I have joined this group, the University Jazz Band, and the band's practice time is right around dinner time.
做梦大约占我们睡眠时间的四分之一。
大约30亿年前，洪水形成了流出通道，大约与北部火山平原形成的时间相同。
Flooding shaped the outflow channels approximately 3 billion years ago, about the same times as the northern volcanic plains formed.
大约在 AlphaGo 获胜的同一时间，微软的“聊天机器人”出现了一个糟糕的情况。
About the same time as AlphaGo's triumph, Microsoft's "chatbot" took a bad turn.
然而，大约在同一时间，科学家们意识到彗星可能含有衰变的放射性同位素，这些同位素可能使彗星内部的温度升高到导致内部进化的温度。
About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve.
大约70%的人认为花时间在花园里很重要，超过50%的人认为园艺是最令人愉快的事情。
Around 70% of the people felt it was important to spend time in the garden, and over 50% of these described gardening as the most enjoyable thing .
你做运动需要多长时间？大约二十分钟。
我花了大约十年的时间才读完。
他们将花费大约五年的时间来建造这条高速铁路。
It will take them about five years to build the high speed railway.
这些细胞需要大约一天的时间才能到达你疼痛的肌肉组织。
It takes about a day until these cells make it to your aching muscles.
布莱恩花了大约五十分钟的时间修理汽车。
这大约需要花费两年的时间。
湖北省武汉市一位老太太用智能手机拍下的“59个微笑”，用了大约六个月的时间讲述了一个大故事。
The "59 smiles" on a smartphone by an old woman in Wuhan, Hubei province in about six months tell a big story.
我每天要工作很长时间，大约11个小时。
新年前夕，俄罗斯人保持着世界上最晚的就寝时间记录——大约在凌晨3：30。
On New Year's Eve, Russians have the world's latest bedtime, hitting the hay at around 3:30 a.m.
在大约10万年的时间里，当海水退去，世界各地的气候变得更加极端：白天更暖和，夜晚更凉爽；夏天更热，冬天更冷。
Over a period of about 100,000 years, while the seas pulled back, climates around the world became dramatically more extreme: warmer days, cooler nights; hotter summers, colder winters.
大约在一个月的时间里，整个城市都变成了一个宏大的戏剧的作品集。
For about a month, the whole city is being turned into a massive collection of theaters.
天主教会为此进行了反抗，且大约一个世纪都没有接受这个新的时间划分法。
The Catholic Church resisted, not coming over to the new hours for about a century.
大约在那段时间，我结识了几位音乐家。
I made the acquaintance of several musicians around that time.
飞行时间大约需要三小时。
这要花大约三周时间，出入不过一天左右。
这个故事讲述的是路易斯安那州一个年轻的逃跑女奴，时间大约在1850年。
The story tells of a runaway slave girl in Louisiana, circa 1850.
在他5岁的时候，他的弟弟去世了，大约在同一时间，查尔斯开始失明。
When he was 5 years old, his younger brother died, and around the same time, Charles started to lose his sight.
有趣的是，有一些推测认为，人类对地球产生重大影响的时间要早得多，大约应该在8000年前。
Interestingly, there's some speculation that humans started having a major impact on Earth much earlier, about 8000 years ago.
我花了大约六个月时间去读托马斯·曼的《魔山》，大多数时候安·兰德的《阿特拉斯耸耸肩》都让我感到非常无聊。
Thomas Mann's difficult The Magic Mountain took me about six months to read; Ayn Rand's Atlas Shrugged made me very bored most of the time.
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