Sulfonephthalein
[医] 磺酞(指示剂)
🗣️ 情景例句
I'd like to help you, but...
我很想帮助你，但是…
I turned off when they started talking about computers.
当他们谈论计算机时，我失去了兴趣。
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。