Vertex coccygeus
[医] 尾毛涡
🧩 词语组成解析
vertex
['vɝtɛks]
n. 最高点;顶点;<数>（三角形、圆锥体等与底相对的）顶;（三角形、多边形等的）角的顶点;
[医] 尾骨肌
🗣️ 情景例句
I hope you're enjoying your stay here.
我希望你在这里过得愉快。
My father used to smoke, but now he doesn't.
w
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，