Pentanitrocellulose
五硝基纤维素
🗣️ 情景例句
Go ahead.
说吧！
Treat it with respect.
请你放尊重点！
and no father is confronted with his inability to 'buy'an education for his child.
也不存在父亲无力为孩子支付教育费用而犯难的问题。