The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

俄罗斯生物学家 G. F. Gause 在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。

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The F-35B is powered by a single Pratt &Whitney F135 engine driving a Rolls-Royce lift fan.

这架F - 35B战斗机是由普惠公司F135型单一发动机引擎驱动劳斯莱斯升力风扇。

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A highlight of the effort, according to Matthews, included the conversion of three single cockpit F-5E aircraft to dual cockpit F-5F aircraft.

改进工作重点之一是根据Matthews将三个单座舱的F - 5E战斗机转换为双座舱的F - 5F战斗机。 原文

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In December it was disclosed that Iraq would be allowed to acquire 36 single-engine Lockheed Martin F-16s and that Oman would double its fleet of the same plane to 24 aircraft.

FORBES: Obama Makes Arms Sales A Key Tool Of U.S. Foreign Policy

The Lockheed Martin F-35C that the Navy is officially planning to buy is a stealthy, single-engine strike fighter derived from the same technologies as the Air Force F-35A and Marine Corps F-35B.

FORBES: Outcome Of Three Programs Will Drive Defense Sector Consolidation

Meanwhile, it will continue to offer the single-band Defy XT to those in waves F and beyond, but alternatively, it'll also keep the door open for its invitees to come aboard once the dual-band version is available -- it certainly seems wise to hold out for the dual-band version if you're able.

ENGADGET: Republic Wireless announces dual-band Motorola Defy XT, offers incentives to quell coverage woes