That must be the story of innumerable couples, and the pattern of life it offers has a homely grace. It reminds you of a placid（平静的，温和的） rivulet（小溪，小河） , meandering（漫步） smoothly through green pastures and shaded by pleasant trees, till at last it falls into the vastly sea; but the sea is so calm, so silent, so indifferent, that you are troubled suddenly by a vague（模糊的） uneasiness（不安，担忧） .

Perhaps it is only by a kink（扭结，