Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape.

此外，由于气体的分子运动依赖于温度，在木星行星的低温下，即使是最轻的气体也不可能获得逃逸所需的速度。

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One of the most difficult skills to acquire in a foreign language is the ability to understand the natural language spoken by native speakers at a normal speed.

一门外国语最难掌握的一项技巧就是听懂母语讲话人用正常速度所说的自然语言的能力。

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We also have intelligence from multiple sources that Iraq is attempting to acquire magnets and high-speed balancing machines; both items can be used in a gas centrifuge program to enrich uranium.

我们从多方获得情报指出伊拉克试图获得磁块和高速配平机械：两者都可用于进行气体离心分离机浓缩铀计划。

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Instead, companies will acquire or look for collaborative ventures because of skill, scale, and speed.

FORBES: Online Group Buying's Need For Speed