cat's-paw

基本解释

It is easy for him to be used as a cat's paw of evil-doing.
他很容易就被人利用，成爲別人爲非作歹的工具。
Pictured above, the end of the Cat's Paw nebula was imaged from Mayall 4-Meter Telescope on Kitt Peak, Arizona, USA.
上麪這張貓掌星雲末耑的影像是由美國亞利桑那州基特峰國家天文台上的4米口逕馬亞望遠鏡拍攝的。
blog.sina.com.cn
Resembling a huge paw print, the Cat's Paw Nebula is a star-formation region, with stars of close to 10 solar masses produced there in the past several million years.
貓掌星雲看起來就像一個巨大的爪印，它是恒星形成區域，近幾百萬年間在貓掌星雲裡誕生的恒星具有近10個太陽的質量。

Not to put too fine a point on it, he acted as a cat's-paw for his boss, Punch Sulzberger, when the publisher got rid of his own more liberal cousin, John Oakes, as editor of the editorial page.
ECONOMIST: New York opinion-makers