Tricosyl
二十三(烷)基
🗣️ 情景例句
You look very familiar. Have we been introduced before?
你看起来很面熟，我们以前互相介绍认识过吗？
She feared the arrival of the bill-collector.
她害怕收帐人来。
That's right! A friend gave me a photo. I wanted to show it to you.
对！一位朋友给了我一张照片。我要拿给你看看。