Cellulin
[医] 动物纤维素
🗣️ 情景例句
What are the best exercises for my health?
什么是最利于我身体健康的锻炼方式？
We never know the worth of water till the well is dry.
井干方知水可贵。
We also want to teach all the children to perform.
我们还想教会所有的儿童演奏。