The Federal Reserve lowered interest rates by half a point.

联邦储备委员会将利率降低了0.5个百分点。

《柯林斯英汉双解大词典》

They didn't; and some now think they might rise by half a point next month.

它们（利率）没有，而且一些人现在想下个月它们（利率）可能增长至50个百分点（具体是多少？）

youdao

Norway's central bank also swung into action today, slicing half a point off its rates to 4.75%.

挪威央行今天也采取行动，将利率下调了0.5个百分点至4.75%。

youdao

That is a half-percentage point higher than the estimate in April.

VOA: special.2010.07.09

And then of course, the point of the skit is he presses the down button on the elevator and a minute and a half goes by while he's waiting for the elevator to come.

当然，这个滑稽短剧的笑点是,他按下了电梯按钮,花了一分半,等电梯。

耶鲁公开课 - 死亡课程节选

However,Michigan pulled away in the second half, building an 11 point lead with just over three minutes left in the game, before fending off a Connecticut rally for the 82-73 victory.

VOA: standard.2009.04.05

My guess: Over a long period his strategy will be good for an incremental half a point a year.

FORBES: Betting Against Market Fads

Interest rates are still only half a point higher than they were in the summer of 1998.

ECONOMIST: Inflation is beginning to pick up in America

Even if its sales to the region fell by 25%, this would reduce growth only by half a point.

ECONOMIST: As Japan goes?