This image, like many Hubble images, has a curious stair-step shape.

这幅图像如同很多其他哈勃图像，具有奇异的阶梯状外形。

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For the 3 best causes of the left side (How made), stair-step by asking why as long as you get more precise information. Probably you found the root-causes.

对于左侧(如何产生)的3个最好的原因，一旦有了更精确的信息就逐级问为什么。或许你会找到根本原因。

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Traders like to see the market make moderate, stair-step advances rather than shooting straight higher, which many see as as ign of unsustainable and impulsive buying.

交易商希望看到市场做出温和，楼梯，一步进展，而不是直接射高，其中许多人认为的标志不可持续的和冲动购买。

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In recent months, Honda dealers say the company has turned to controversial "stair-step" incentives to capture more price-sensitive buyers.

WSJ: Honda Pins Revival on U.S. Auto Sales

The market continues to methodically stair-step higher, holding key levels when it has to in order to maintain bullish composure.

FORBES: Big Earnings Coming From Google, Apple, IBM, ISRG

Examples include so-called stair-step programs, where dealers get a retroactive bonus per car if they hit a particular sales target.

FORBES: It May Be Trite, But The Selling Season For Cars Is Upon Us