Dermol
[化] 大黄根酸铋
🗣️ 情景例句
It has been a learning experience. That's true.
这真是一次学习经验， 真的。
Perseverance is failing nineteen times and succeeding the twentieth.
十九次失败，到第二十次获得成功，这就叫坚持。
The undulating waves of the open sea are generated by three natural causes:
海浪是由三个自然因素形成的：