Deruster
除锈溶液, 除锈剂
🗣️ 情景例句
This is my mother.
这是我母亲。
You're welcome.
不客气。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。