Polyesterification
n. 聚酯
🗣️ 情景例句
Hello, I'm glad to meet you. I've heard so much about you.
你好， 很高兴见到你。 久仰， 久仰。
How are you?
你好吗？
What will be the population of the world in the year 2000?
2000年世界人口将是多少？