Phenanthrenone
[化] 菲酮
🗣️ 情景例句
You really ought to take some time off.
的确应该休一休假。
Light come, light go.
来得容易，去得快。
Mr Hu stood at the starting line. All the runners got ready to run.
胡先生站在起跑线上。所有的运动员都做好了起跑准备。