This is a set of variations on a theme by Mozart.

这是以莫扎特某一乐曲为主题的一组变奏曲。

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Many legal tasks, although not quite easy, are variations on a theme.

有许多法律事务(尽管做起来也不是很容易)是主题变奏曲。

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These actions are variations on a theme: supply more shares to meet demand.

这些不同措施都围绕着一个主题：增加股票供应量，以满足需求。

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These actions are variations on a theme: supply more shares to meet demand.

这些不同措施都围绕着一个主题：增加股票供应量，以满足需求。

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