Polyacetals
聚缩醛(树脂)
🗣️ 情景例句
If satisfactory we may consider further orders.
如果满意的话，我们可以考虑进一步的订单。
Do you like football?
你喜欢足球吗？
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。