Their long, heavy arms, good for hanging from branches, act as pendulums to swing their weight forward as they uncoil from the crouch.

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Lula wants Mr Sarney to swing the weight of the PMDB, and its patronage machine, behind Dilma Rousseff, the probable candidate of the ruling Workers' Party in the presidential election next year.

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However, his approach to hitting allowed him to put his full weight behind every swing and the results would speak for themselves.

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