Quadrivalents
(quadrivalent 的复数) a. 四价的\\n[医] 四价的
🗣️ 情景例句
A journey of a thousand miles begins with a single step.
千里之行，始于足下。
Janet winked at her boy friend.
珍妮向男朋友眨眨眼。
Sorry. I'm free every day except today.
对不起。我每天都有空，唯独今天没空。