Polyunit
叠合装置
🗣️ 情景例句
He graduated from medical school in 1960
他在一九六零年从医学院毕业，
Time past never returns, amoment lost, lost for ever.
过去的时间决不返回，浪费一点，永远消失。
he instructs the bank to debit his account only in respect of cheques drawn by himself.
嘱咐银行他的存款只能凭他本人签字的支票来提取。