P-xylenolsulfonephthalein
[化] 二甲磺酞
🗣️ 情景例句
I'm so glad everyone is asleep.
很高兴大家都睡了。
This knife is dirty.Would you bring me a clean one,please?
这把刀子是脏的.请你给我干净的一个,好吗？
Looking up I saw that we were surrounded by children in rags who were looking at us silently as we ate.
我抬头一看，发现我们被一群衣衫褴褛的小孩团团围住了，他们在默不作声地看着我们吃饭。