Copper is an important metal, and is used very extensively.

铜是一种用途非常广泛的重要金属。

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The Russian unaccusative verbs have the special morphologic marker and they are used very extensively. The "sense" and "speech" verbs also have their unaccusative forms.

俄语的非宾格动词有形态标志，并且涵盖范围较广，“感觉”和“言说”类非使役性动词也可以有非宾格形式。

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In the measurement of sound absorption coefficient in random incidence and determination of sound power levels of noise sources, the reverberation room is used very extensively.

混响室是声学专业的实验室用房，它在测量声波无规入射时材料的吸声系数和测量噪声源的声功率级中得到了广泛应用。

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We don't know how it works, but it's used very extensively.

NPR: Slate's Medical Examiner: Doubts on Supplements

He added the vaccine - which is administered in drops - had been "used very extensively" with "huge trials demonstrating both its safety and its effectiveness".

BBC: Babies to get 'gut bug vaccine'