Dpvs
abbr. dysplastic pulmonary valves 发育不良性肺动脉瓣
🗣️ 情景例句
He never married because
他不结婚是因为
That important man is very unassuming in his manner.
那个要人彬彬有礼，是一位毫不摆架子的人。
but it was not until 1869,
但直到1869年，