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[商]阴离子表面活性剂(用作起泡剂, 泡沫促进剂及稳定剂)
🗣️ 情景例句
When is that?
那是几点？
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
I'm afraid we haven't got any black shoes in that size at the moment.
恐怕此刻我们没有8号的黑色鞋了。