Forskolin
毛喉素；毛喉萜；二萜衍生物
🗣️ 情景例句
Kids today have too much freedom, it's not like the old days.
现在的小孩太自由了，不像以前。
I have great difficulty in understanding him.
我觉得很难理解他。
Yes, they are.
对，这些是英语书。