Polylactide
聚交酯
🗣️ 情景例句
That's always nice to hear, Mr. Marchetta.
听到这事总是好的， Marchetta先生。
Can you keep an eye on my bag?
帮我看一下包好吗？
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。