Thereisacommon,usuallyroundobjectthatyoucanseeeverydaya...
问题详情:Thereisacommon,usuallyroundobjectthatyoucanseeeverydayanditappearsinmanyexpressions—buttons!Buttons,whicharemadeofmetalorplastic,arefoundonallsortsofclothing.Theyfastenorconnectonepieceofclot...