Heister's valves
[医] 海斯特氏瓣(胆囊颈螺旋瓣)
🧩 词语组成解析
n. 阀门；真空管；瓣膜（valve的复数）
🗣️ 情景例句
But with only one more year to go, you would be well-advised to finish.
可是只剩下一年了，你要是明智的话就应该学完。
One enemy is too much.
一个敌人也太多。
Are there any boats in the picture?
画里面有船吗？