The utility model comprises two butterfly wing-shaped base boards, a book clamp with a spring, a clamp rod grate, two clamp springs and two motion clamp rods.

由两个蝴蝶翅膀形底板、一个带弹簧书夹子、一个卡棍箅子、两个卡簧和两根活动卡棍组成。

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A gynandromorphy butterfly emerged from its chrysalis at the Natural History Museum in London two weeks ago.

两周前，在伦敦自然历史博物馆有一只雌雄同体的蝴蝶破茧而出。

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Found in the Eastern side of the US, this butterfly often produces two or three batches of eggs each year which puts it among the more fecund of butterflies.

虎凤蝶在美国的东部可以发现，这种蝴蝶通常每年产卵两到三次，这使它位列最多产的蝴蝶之一。

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That was all Tuesday. The next day, Michael Phelps competed in the two hundred meter butterfly.

VOA: special.2009.08.01

Fifty-two butterfly species saw populations decline in 2012 compared with 2011, with 13 experiencing their worst year in records dating back to 1976.

BBC: Butterflies suffered in cold and wet 2012, says charity

In London Mr Hirst presides over two large industrial units producing the butterfly-wing pictures and his photo-realist paintings.

ECONOMIST: Damien Hirst

Push a button and the ballerina's tutu becomes the wings of a butterfly that flutter along two arcs of numerals.

WSJ: The Face of Watchmaking's Future at SIHH and GTE