If astronomers could observe metallicity gradients in spiral galaxies billions of light-years away, we could see how steep the gradients were billions of years ago and thus how they change over time.

如果天文学家能够观测到十亿光年外的螺旋星云的金属丰度梯度，我们就可以知道亿万年之前的梯度有多大，因此也就可以知道它是如何随时间变化的。

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After completing some work on his laptop while soaking in the hot tub, he walks down the spiral staircase, under the hanging chandelier and into the pool room for some 'down time'.

洗澡时顺便完成工作，然后他沿着螺旋梯往下走，经过华丽的吊灯，跳进室内游泳池尽享他的水下时间。

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More studies based on the NLST data set are ongoing, and will include reports on the cost effectiveness of spiral ct and the effects of the screening process on smoking behaviors over time.

还有很多基于NLST的数据的研究正在进行，包括有关螺旋ct的成本效用的研究，以及成像过程对长期吸烟习惯的影响的研究。

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Remember I talk those of you who were here the first time: this course is built like a spiral Everything is intra-connected, what I talked about in the first class is connected to what I'm going to talk about today, is going to be connected to lecture 19.

记得一开始我就跟你们说过：,这课程就像个螺旋,内部的一切都是相关的，第一节课讲到的内容,与今天要谈的课题有关，也和第19课有关。

哈佛公开课 - 幸福课课程节选

At the same time, the connections of the spiral to the rest of the movement are far more accurate, also enhancing performance, and eliminating the need for fiddly adjustments.

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And this education continued throughout his life, though there came a time when the blue spiral notebook was supplanted by a tape recorder.

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What happens all the time is traders will spiral.

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