The ratio between the two was pretty flat for the first half of the 20th century, and then soared in the 1960s and 1970s, as the baby boomers left college (see chart).

两类储户间的比值关系在20世纪上半叶非常平稳，到了60年代和70年代，当婴儿潮时期出生的一代人走出大学时，这个比值开始急剧飙升。

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On the supply side (chart 2, bottom panel), the main source of new gold-what is dug out of the world's goldmines-has been flat or declining.

在供给方面(图2，下半部分)，从世界各地的金矿开采出来黄金是新的黄金的主要来源，这部分数量已经趋平或者说在下降。

youdao

The projection provided a solution to a puzzle that had troubled mapmakers since the world was recognized as a sphere: How does one represent the curved surface of the globe on a flat chart?

WSJ: Lost in Our Maps: A History of Cartographic Catastrophes

TSMC's business was actually flat (see chart).

ECONOMIST: Confusionism

For more on the flat base and other bullish chart patterns, visit the Online Courses at Investors.com.

FORBES: Baidu And MercadoLibre Back In The Sweet Spot