黄铜环 meaning in Chinese

brass billet

He heard then a warm heavy sigh , softer , as she turned over and the loose brass quoits of the bedstead jingled
这时，他听到深深的一声热呼呼的叹息。她翻了翻身，床架上那松垮垮的黄铜环随之叮零当啷直响。
With circumspection , as invariably when entering an abode his own or not his own : with solicitude , the snakespiral springs of the mattress being old , the brass quoits and pendent viper radii loose and tremulous under stress and strain : prudently , as entering a lair or ambush of lust or adder : lightly , the less to disturb : reverently , the bed of conception and of birth , of consummation of marriage and of breach of marriage , of sleep and of death
谨慎地，就像每一次进入一座房子他自己的或并非他自己的的时候那样，小心翼翼地，因为床垫子那蛇状螺旋弹簧已经陈旧了，黄铜环和蝰蛇状拱形挡头也松松垮垮的，一用力过头就颤悠顾虑周到地，就好像进入肉欲或毒蛇的巢穴或隐身之处似的轻轻地，省得惊动她虔诚地，因为那是妊娠与分娩之床，合卺与失贞之床，睡眠与死亡之床。