Among the variety of artificial receptor models, a special class of receptors called molecular tweezer are currently attracting great interest.

在众多人工受体模型中，分子钳作为一类新型的人工受体已引起人们的广泛关注。

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Would you rather fight for special interest tax breaks, or do you want to fight for tax cuts for small businesses and middle-class families in your neighborhood?

WHITEHOUSE: President Obama at Forum on American Latino Heritage