你认为把不同能力的学生混合在一起的班级会妨碍较高水平学生的进步吗？
Do you think that mixed-ability classes hold back the better students?
1990年12月，斯特拉斯堡主办了首届欧洲森林保护部长级会议。
In December 1990, Strasbourg hosted the first Ministerial Conference on the protection of Europe's forests.
上级发出决策，并期望下级会接受这些决策。
The superior transmits decisions with the expectation that the subordinate will accept these decisions.
可是，增加这些中间层级会使系统难以理解。
Increasing the number of levels of indirection can make a system increasingly hard to understand, however.
下面，我们将谈谈Shiro的高级会话管理功能。
Next we'll talk about Shiro's advanced Session Management capabilities.
所有公司都有风险，风险的等级会影响你的支出和决策。
All businessess carry risks, and thedegree of risk will affect cost and available financing alternatives.
巴拉克·奥巴马召开了一个关于原子核安全的最高级会议。
但网站有一些问题，那就是在预定过程中，酒店的星级会变化。
The site has some quirks; the number of stars on the hotel we were booking changed from four to three as we went through the process.
近来，欧盟在德国的高级会议上对亚洲采用了一个新的战略政策。
Recently, the EU adopted a new strategy toward Asia at a summit meeting in Germany.
这些轻量级会话减少了创建中间层与数据库的连接所带来的开销。
These lightweight sessions reduce the network overhead of creating separate network connections from the middle tier to the database.
像如下范例中那样定期刷新(flush)并清除一级会话缓存。
Flush and clear your first-level session cache periodically as in the following batch insert sample.
在进行升级之前，应该对数据库进行备份，因为升级会修改数据库。
Back up your database before proceeding, since this will modify the database.
不管怎么样，从公众视野里消失18个月后他在一个中级会议上复出。
Either way, he disappeared from public life for 18 months before being rehabilitated in a midlevel party position.
这一次，他甚至没尝试过在春田时他也影响过的那种高级会员间的活动。
This time, he did not even attempt the clubbable chumminess he had affected in Springfield.
甚至从国际高级会议的标准来看，20国会议的联合公报实在是厚颜无耻。
Even by the standards of global summitry, the G20 communiqué was pretty brazen.
当你弄明白如何解决问题，并且开始在公司内建立关系网，你的上级会欣赏你的。
Your supervisor will appreciate the fact that you've figured out how things work and that you've begun to build relationships throughout the company.
降级会削减其价值，从而使哪怕是最自鸣得意的业主也要付出代价才能获得竞争力。
Demotion would cut their value, driving even the most complacent owner to do what it takes to get competitive.
在景气时提高品级会使经济泡沫变大，而在衰退时降低品级则自动地让市场驻步不前。
In good times upgrades fuel bubbles; in bad times downgrades automatically send markets spiralling.
在一些顶级会议上，只要是关于社交媒体和市场营销的，通常观众多的只有立足的空间。
There, some of the top sessions, the ones so jam-packed that it was standing room only, were specifically about social media and marketing.
减少元素的兴趣等级会关闭其编辑器，且反之亦然，关闭一个文件也会减少其兴趣等级。
Reducing an element's interest closes its editor and, conversely, closing a file reduces its interest.
虽然在项目的开始，一起旅行是重要的“需求”，但是我们知道有时候优先级会发生变更。
Even though traveling together was an important "requirement" at the start of the project, we understand that sometimes priorities change.
用户进程的实际优先级会随着时间发生变化，这取决于该进程最近所使用的CPU 时间。
The actually priority of a user process varies over time, depending on the amount of overall CPU time that the process has used most recent.
4月27日的一次外长级会议上，德国对欧盟东部边境上的国家乌克兰的稳定性敲响了警钟。
At a foreign ministers' meeting on April 27th, Germany sounded the alarm about instability in Ukraine, on the EU's eastern border.
本周，我在Napa主持了HotOS 2011年会，这是一个关于操作系统的顶级会议。
This week I'm in Napa for HotOS 2011 — the premier workshop on operating systems.
研究发现，白人孩子的社会阶级会更容易影响到他们在学校的表现，这种影响比少数族裔更严重。
A child's social class is more likely to determine how well they perform in school if they are white than if they come from an ethnic minority, researchers have discovered.
研究发现，白人孩子的社会阶级会更容易影响到他们在学校的表现，这种影响比少数族裔更严重。
A child's social class is more likely to determine how well they perform in school if they are white than if they come from an ethnic minority, researchers have discovered.
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