Molybdena
氧化钼
🗣️ 情景例句
My name is Richard Stewart.
我的名字是Richard Stewart。
I'd appreciate it if you would turn out the lights.I'm sleepy.
如果你关灯我将感激你的.我困了。
Last week No.14 Middle School held a sports meeting on the playground.
上星期第十四中学在操场举行了一次运动会。