Phenolphthalein
n. 酚酞\\n[化] 酚酞
🗣️ 情景例句
Don't be so miserable!
别这愁眉苦脸的。
I'll pretend like it's not ringing.
且当它闹钟没有响吧。
It comes nearer to the engines with which man has 'conquered' the air, as he boasts.
它更近乎于人类自夸的“征服”了空气的发动机。