一个月大约三次。
大约三次。
第三次浪潮大约发生在一万或九千年前，见证了东北亚的祖先群体向现代爱斯基摩人和阿留申人的迁移。
The third wave, perhaps 10,000 or 9,000 years ago, saw the migration from North-east Asia of groups ancestral to the modern Eskimo and Aleut.
麦森吉尼斯说，经历之前的溢油事件，表明需要五年的时间这些海草才能恢复原貌，这大约正是海马的三次繁殖周期。
Masonjones said the experience of earlier oil spills suggested it could take five years for seagrass to make a complete recovery, which represents about three generations of seahorses.
但是Levens说，35岁以下的女性“大约85%会在前三次之内成功怀孕”。
But, Levens says, for women younger than 35, "approximately 85 percent will successfully achieve a pregnancy within their first three cycles."
如果时间允许的话，大约一星期三次。
“我一周去两到三次，大约两个星期，”她说。
"I went two or three times a week, probably for a couple of weeks," she said.
如您所见，查询执行了三次，平均运行时间大约是307秒，非常慢。
As you can see, the query was executed three times, and the average elapsed time is about 307 seconds, which is very slow.
6月28日，全国大约组织了4000多次聚会；我注册和参加了波士顿地区大约一打聚会中的三次聚会。
More than 4, 000 parties were organized nationwide on June 28; I logged in and picked three parties from about a dozen in the Boston area.
水手10号在其快速掠过时设法绘制了水星表面大约45％的地图，不过信使号的三次近水星飞行已经填补了空白，现在有了几乎很完整的水星表面地图。
Mariner 10 managed to map about 45% of Mercury's surface as it sped past, but Messenger's three flybys have filled in the gaps, and there is now a virtually complete map of the place.
一个原子体积大约是，一个埃的三次方。
And an atomic volume, it's going to be on the order of 1 angstroms cubed.
您愿意一个礼拜大约加班三次，而且有时周末也要加班吗？
Michael: Are you willing to work overtime about three times a week and also on the weekend sometimes?
在今年，海关专家已截获该甲虫100次，他们在新闻发布会汇总表示，“相比较而言，在2005和2006年才三次到六次，而在2007年至2009年平均数也大约在15次每年”。
Customs specialists have intercepted the beetle 100 times this year, "compared to three to six per year in 2005 and 2006, and averaging about 15 per year from 2007 to 2009, " the press release says.
超过一半的女性抱怨她们每个月会有超过三次的尿失禁，只有大约五分之一出现的频率超过每周三次。
Over half of those complaining of the problem experienced up to three episodes of involuntary leakage a month, but for around one in five the frequency of episodes exceeded more than three a week.
我一周慢跑三次左右，每次大概跑3-4英里，每英里大约用时7.5分钟（普通锻炼效果），这就是我的参考标准。
I jog about three times a week, for about 3-4 miles each time at about a 7-1/2 minute per mile pace for general conditioning, so that's my frame of reference.
日志需为持在电子化可列印形式，在学期中必须交三次（参见时间表），最终的日志必须大约长达10页。
The journal should be kept electronically in a printable form. It will be handed in three times during the semester (see schedule). The final journal should be about 10 pages in length.
课程成绩基于三次不积累的考试(占最后分数85%)和大约九组问题集(占最后分数的15%)。
The course grade will be based on three non-cumulative exams (85% of the final grade) and approximately nine problem sets (15% of the final grade).
从而因为水星每公转两次自转三次，所以太阳升起到下一次再升起的时间间隔大约为176天。
As a consequence, because Mercury rotates three times for every two times it revolves around the sun, the time it takes from one sunrise to the next is equal to about 176 days.
随堂考每次为 90分钟，第三次考试大约会有两个小时。
The in-class exams will be 90 minutes each and the third exam will probably be closer to two hours.
我需要一周三次大约20分钟的锻炼。
我需要一周三次大约20分钟的锻炼。
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