Polybutylenes
聚丁烯
🗣️ 情景例句
What are you working on?
你在干什么？
An evening red and a morning grey, is a sign of a fair day.
晚霞红如火，晓色青如灰，定是晴朗天。
No matter where you live, you would find it difficult not to laugh at, say, Charlie Chaplin's early films.
比如说，不管你生活在哪里，你看查理。卓别林的早期电影很难不发笑。