Blueing agent
[化] 上蓝剂
🧩 词语组成解析
a. 带青色的
🗣️ 情景例句
What did I tell you?
我不是告诉过你吗？
Did you go swimming yesterday?
你昨天去游泳了吗？
This shows how long it was before we deemed it necessary to make sure that all our children could share in the knowledge accumulated by the'happy few' during the past centuries.
这说明，经过了多么漫长的时间之后，我们才认识到，有必要确保我们的孩子享有多少个世纪以来由‘少数幸运者’所积累起来的知识。