Phenolphthalein
n. 酚酞\\n[化] 酚酞
🗣️ 情景例句
Considering the friendly relation between us,
鉴于我们之间的友好关系，
Cheerfulness and goodwill make labour light.
欢快与好意，劳动不觉累。
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。