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A null return value implies all active slices, while an empty array will raise an exception.

空返回值意味着所有片都是活动的，而空数组则会引发一个异常。

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The marketplace is also being driven by the growth of active electronically scanned array (AESA) technology.

电子扫描阵列（AESA）技术的增长也带动了该市场的增长。

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Fermi has been a tremendous success at examining some of the most high-energy processes in the cosmos, publishing a catalogue filled with details of the spinning neutron stars known as pulsars, and a wide array of "active galactic nuclei" - probably supermassive black holes.

BBC: Fermi telescope may change to dark matter hunting

The active speakers harness an array of high-end components to deliver expansive audio performance from very compact constructions.

ENGADGET: Bang & Olufsen launches BeoLab 15 in-wall speakers for stealthier beats (update: ears-on)

Third, special situations funds are active in a broad array of debt financing and other investments in distressed or rapidly changing companies.

FORBES: Who's Afraid of Private Equity?