Ooide
鲕粒; 鲕石
🗣️ 情景例句
Susan called early this morning. Susan
一大早打电话来。
You are healthier than I am.
你比我健康。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。