Idiom
To wash one's dirty linen in public

To criticise one's nature in public
To do some ugly work in public
To discuss dirty and scandalous matters of personal nature in the presence of strangers
To quarrel in the open

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Idiom
To plough the sands

To work hard to achieve one's aim
To busy oneself in a way which cannot lead to any profitable result
To afford hope or ground for expecting a good result
To advance one's position in life

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