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- The outer ring contains the valence electrons. 排在外层的有价电子。
- This methodology provides an easy to use, efficient yet flexible procedure for the formation of pyrrolidine and piperidine ring containing compounds. 在研究中我们发现了一种新的孤立双键的溴代氮环化方法，并成功利用该方法进行了不对称诱导形成新的手性中心的研究。
- A diastereoselective version for the synthesis of chiral pyrrolidine and piperidine ring containing compounds was also developed. 利用由本项目拓展的方法，我们成功全合成了生物碱石蒜碱及单萜化合物紫牡丹内酯，合成了蛙皮毒素的重要合成中间体。
- Ring containment is a proven method of halting a smallpox epidemic. 在阻止天花传染方面，圆形地区隔离是一种得到验证的有效方法。
- Like the pill and the patch, the ring contains both an estrogen and a progestin. 象避孕药和避孕贴片一样，阴道环即含有雌激素也含有孕激素。
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- She wears a diamond ring on her left hand. 她左手上戴着一枚钻石戒指。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- It's wise to register letters containing banknotes. 信中夹钞票最好寄挂号。
- I am sorry-she's out. Can you ring again later? 对不起－她出去了。你过些时候再打电话来好吗？
- The boys and girls made a ring round us. 男孩和女孩围着我们站了一圈。
- A book containing the choral portions of the Mass. 弥撒升阶圣歌集包括弥撒音乐部分的祈书
- Please ring for the attendant if you need anything. 如果需要什么，请按铃找服务员。
- A drug or preparation containing arsenic. 砷化合物含砷的药剂或制剂
- The music was so loud it made my ears ring. 音乐的声音太大了，把我耳朵震得直响。
- A fertilizer containing phosphorus compounds. 磷肥含有磷化合物的一种化肥
- The policeman felt that my story didn't ring true. 警察认为我讲的话听起来不可信。
- The document containing this exemption. 特许状包含这种特许的文件
- She wears a ring round her wrist. 她的手腕上戴着一只镯子。
