Ballvalves
(ballvalve 的复数) 球型人造瓣膜
🗣️ 情景例句
that express the feelings that I feel for you in my heart.
可以表达我内心对你的感情。
When were you born?
你是什么时候出生的？
' But they don't realize one important thing.
”然而他们没有认识到重要的一点，