Mid-fifties, short black hair, grey moustache, distinctive Russian accent. Need I go on?
五十四五岁，黑色短发，灰色八字胡，明显的俄国口音，还需要我继续说吗？
柯林斯例句
He's in his mid - fifties; well, fifty - six to be exact ( ie more accurately ).
他五十多岁; 嗯, 确切地说是 五十六 岁.
互联网
Her new boss was in his mid - fifties, a portly figure in an ill - fitting suit.
她的新老板是个五十多岁的 中年人, 身材肥胖,衣着不合身.
互联网
Her hair wasn't completely gray and she was only in her mid - fifties, middle - aged really, she knew.
她的头发并未全白,只有五十多岁, 实际还是中年 -- 这一点, 她自己也清楚.
互联网