Presphygmic interval
[医] 脉前间期(心)
🧩 词语组成解析
[医] 脉波前的
🗣️ 情景例句
He has a big sales office in Los Angeles,
他在Los Angeles有一个大的销售办事处，
Do you have a letter of introduction?
你有介绍信吗？
because this is easier to shape than other kinds.
因为燧石较之其他石头更容易成形。