Tetrachlorophenolphthalein
四氯酚酞
🗣️ 情景例句
First, we have to decide where to live.
首先 ，我们得决定住在哪里。
The whole carton is packed with double straps, each corner of the carton consolidated with metal angles.
纸箱外加了两道箍，每个箱角都用金属角加固。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。