The researchers found that all bar one of the classrooms they studied had equipment arranged in such a way as to exacerbate this problem, with projectors on the ceiling and screens mounted vertically.

研究者们发现除了一间教室外，所有教室都把投影仪挂于天花板上，屏幕垂直安装，这样的设置使问题更加严重。

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New functions include regular expression syntax for pattern matching, new date functions such as current date, and new numeric functions such as floor, ceiling and round.

新的功能包括用于模式匹配的正则表达式语法，新的日期函数比如当前日期，还有新的算术函数比如floor, ceiling和round。

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Those Iowans may well be reacting to domestic news, such as the debt-ceiling crisis in late July or Standard & Poor's downgrade of America's credit rating.

那些爱荷华州的投资者们也许对国内的新闻反映迅速，譬如七月底的债务上限危机，或是标准普尔公司下调对美国主权信用评级。

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Mothers of young children have been particularly aggressive about prodding the government to increase food testing, and to re-evaluate the safety limit and impose more restrictions, such as a ceiling on radiation measurements in school lunches.

WSJ: Radioactive Traces Found in Japan Baby Formula

He steered them toward grace notes such as a planked wall or a ceiling beam in a living room.

FORBES: Barn Again

Analysts pointed out that gold also has a number of other factors underpinning it beyond just the debt-ceiling impasse, such as European debt problems and inflation in emerging markets.

FORBES: U.S. Impasse Keeps Adding To Gold's Luster; Correction Would Temporarily Dull The Shine