Phenylenediamine
苯二胺
🗣️ 情景例句
Well, the company has some financial problems. People there are all thinking of quitting.
是这样的，公司有些财政困难。人们都在想辞职。
When did you ener the school?
你什么时候入学的？
After switching on powerful arc lights, they saw great stalagmites -- some of them over forty feet high -- rising up like tree-trunks to meet the stalactites suspended from the roof.
他们打开强力弧光灯，看见一株株巨大的石笋，有的高达40英尺，像树干似地向上长着，与洞顶悬挂下来的钟乳石相接。