Rigid pvc
[化] 硬聚氯乙烯; 硬质聚氯乙烯
🧩 词语组成解析
聚氯乙烯\\n[计] 永久虚电路
🗣️ 情景例句
He graduated from medical school in 1960
他在一九六零年从医学院毕业，
All our work was in vain.
我们白干了一场。
She had told him to come straight in if ever she failed to open the door and to leave the bread on the kitchen table.
她曾告诉过面包师，如果她不去开门，他可直接进门，把面包放在厨房的桌上。