half a minute

基本解释

"The scale is different," he says, "but consider that fighter pilots usually black out after half a minute at four to six g's."
“数据稍有出入，”他说，“但想想看，承受4至6g过载的战斗机飞行员通常片刻之后就会出现黑视。”
The distance between every one of the Knots must be 50 Foot; as many of these as run out in half a Minute, so many Miles or Minutes the Ship saileth in an Hour.
每一节（knot）之间的距离应为50英尺（foot）；每隔半分钟数了多少节，船只每小时就驶过多少英里（mile）、多少‘分‘（minute）。
Half a minute, no more than one minute.
半分钟，不能超过一分钟。

And every minute and a half, another mother dies giving birth somewhere in the world.
For joy, apparently, it was all Franny could do to hold the phone even with both hands. For a foolish half minute or so there was no other words, no further speech, then "I can't talk anymore, buddy."
为了欢愉，明显是弗兰尼拿着电话,或者用双手能做的，在大约半分钟里,没有其他的话了，也没有讲话了，然后说，我不能谈论任何人，巴蒂“
耶鲁公开课 - 1945年后的美国小说课程节选
They each have about a half an hour or 45-minute lessons.
他们每个人都有大概一小时或四十五分钟的课。
和钢琴老师 - SpeakingMax英语口语达人

It reached Mach 4.8 in less than half a minute powered by a solid rocket booster.
NPR: Experimental Air Force Aircraft Goes Hypersonic