1、ocean 海洋。(latin prefix=against occlusion) ，（拉丁语前缀）和闭塞相反。oval cut 椭圆相交。 open charter 未注明货种及卸货港的租船合同。
2、实用场景例句：the interval oc is known as the domain of dependence.
3、区间oc叫做相关域。
4、辞典例句：let oc be the bisector of angle aob.oc为aob的角平分线。finally, removing the operating characteristic ( oc ) curves for on - line sampling and inspection.最后, 取消 在线 抽样和检验操作特征曲线 ( oc )。