While the use of bed nets has long been encouraged by WHO, the recent development of "long-lasting insecticidal nets" (LLINs) has dramatically improved their usefulness.

虽然世卫组织长期以来鼓励使用蚊帐，但是最近开发的“长效杀虫蚊帐”已显著提高其有效性。

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Plastic mulch increases soil temperature in the bed which promotes faster crop development and earlier yields.

塑料薄膜覆盖提高苗床的土壤温度，促进作物较快发育并提早成熟。

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Royal Dutch Shell's move on Arrow Energy is an important step forward in the company's development of Australia's coal bed methane.

荷兰皇家壳牌(Royal Dutch Shell)收购Arrow Energy，是该公司开发澳大利亚煤层气战略向前迈出的重要一步。

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Industry insiders describe the commercialization of gas hydrates as similar to the development of coal bed gas resources.

FORBES: Energy's Most Dangerous Game

Mr. CHRIS SACCA (Google): We think San Francisco can be a great test bed for the development of new applications, services, local advertising, all kinds of really cool community-based services.

NPR: San Francisco Weighs Wi-Fi Plans

This puts different stresses on hardware and provides a unique test bed for products under development.

FORBES: Consortium Builds Next-Generation Net