异二氢假荆芥内酯...

The site urinary tract obstruction and hydronephrosis could be clearly shown.结果所有病例均清晰显示梗阻部位及尿路积水情况.Objective To investigate the ultrasound diagnosis and prognosis of fetal hydronephrosis.目的探讨胎儿肾盂扩张积水的超声诊断和预后.Follow - up...

hydronephrosis的音标：hydronephrosis的英式发音音标为：[ˌhaɪdrənɪ'frəʊsɪs]hydronephrosis的美式发音音标为：[ˌhaɪdrənɪ'froʊsɪs]...

droned的音标：...

Chambers' voice droned, maddening as an insect around his head.钱伯斯一直在他耳边嗡嗡地说个不停，他都快疯了。Aunt Maimie's voice droned on.梅米姨妈喋喋不休地说着。She droned on for hours about the uses of the present tense.她花了好几个小时啰嗦现在时的用法....

drone的第三人称单数（三单）为：drones...

n.雄蜂，嗡嗡声，持续低音，无人驾驶飞机v.嗡嗡叫，嗡嗡响，絮絮叨叨地说...