Saphenous veins
[醫] 隱靜脈
?? 詞語組成解析
a. [解]隱靜脈的,隱的
n. 紋理；靜脈（vein的復數）
??? 情景例句
Don't open the door if you don't know who it is.
如果有陌生人敲門不要開門。
I would like to place a person-to-person call.
我要打一個叫人電話。
Yes, I think so.
是啊。