In addition to low emissions, natural gas can also be used as a petroleum fuel substitute or extender as in the case of dual fuel engines.

除排放低外，天然气可以替代石油燃料，或作为双燃料发动机的混合添加物。

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Transformation Extender can also support advanced transformation requirements, such as efficient processing of large data records or messages, and advanced data validation without complex coding.

Transformation Extender还支持高级的转换需求，例如大型数据记录或消息的高效处理，以及无需复杂编码的高级数据验证。

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The cheapest option could be to use giant mid-air refuelling aircraft, such as the US air force's KC-10 Extender, filled with sulphur dioxide or hydrogen sulphide gas.

最便宜的方案是使用巨型空中加油飞机——例如美国空军的KC-10“补充者”空中加油机（KC-10 Extender），装满二氧化硫和硫化氢气体。

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Since losing the weight, Daniel has celebrated many milestones she never would have achieved weighing nearly 400 pounds, such as attending sporting events with her family, white-water rafting, kayaking, flying on an airplane without buying two tickets or using a seatbelt extender or simply being able to look down and see her feet.

CNN: 175 pounds lighter, woman takes flight

Additionally it can be used as a Wireless Router, Range Extender or Wireless Bridge.

ENGADGET: TP-Link Portable 3G Wireless N Router fits in your pocket, draws power from USB

It also functions as a Wireless Router, Range Extender or Wireless Bridge.

ENGADGET: TP-Link Portable 3G Wireless N Router fits in your pocket, draws power from USB