Grafenberg's ring
[医] 格雷芬伯格氏环(避孕环)
🧩 词语组成解析
ring
[riŋ]
n. 戒指，指环;铃声，钟声;环形物;拳击场;
vt. 形成环状;环绕;使（例如铃）响;打电话给;
vi. 按铃，敲钟;回响;成环形;
🗣️ 情景例句
but he has to work today,
但他今天工作忙，
I lost two teeth, my contract, and the game.
福无双降，祸不单行；黄鼠狼单咬病鸭子。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：