我每天都穿那双旧鞋，有一只鞋底已经脱胶了。I wear my old shoes every day. One sole has come unglued.他妈妈穿上牛仔裤和平跟鞋，看上去年轻了10岁。His mother looked ten years younger in jeans and flats.一脚蹬比系带鞋容易穿。Slip-on shoes are easier to put on than lace-ups....
Climate reflects a basic struggle between constancy and change.气候反映出稳定与变化之间基本的较量。He admired her courage and constancy.他钦佩她的勇气和忠贞。The constancy of the speed of light seems, at first thought, unremarkable.光速恒定, 初看起来好像很平常....