Oncolite
藻灰结核; 核形石
🗣️ 情景例句
Are you excited about graduating from high school?
你从高中毕业会不会感到很兴奋呢？
She had to keep out of sight when her husband was holding a meet.
她在丈夫举行会议时只得避不露面。
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。