The key test was whether boys and girls would show a preference for choosing pink objects and at what age such a bias might arise.

这里主要想验证的是，男孩女孩在选择粉红色物件时是否存在差异，如果有，又是什么时候开始有。

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The debates are a "key test" of the strength and abilities of the candidates, says CNN analyst Jeff Greenfield.

CNN的分析家杰夫·格林菲尔德说，辩论是对候选人的实力和能力的“严峻考验”。

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Tunable Erbium-Doped Fiber Laser (EDFL) is the key test device in the Optical Communication System (OCS) based on Dense Wavelength Division Multiplexing (DWDM).

可调谐掺铒光纤激光器是实现基于密集波分复用(DWDM)的全光通讯系统的关键器件。

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The mild winter sets the sector up for a key test of underlying demand.

WSJ: Mild Winter Could Help Home Depot Earnings

He faces a key test in primary elections in Arizona and Michigan on 28 February.

BBC: Rick Santorum hits Barack Obama on energy and climate

But how Alex does in hurricane season will be a key test in the harshest conditions.

FORBES: Liquid Robotics to Usher Era of Smart Oceans With Autonomous Robots