Velocitron
质谱仪
🗣️ 情景例句
Why don't you go to your room, Mom, and get some sleep.
为什么不到你的房间去？妈妈， 去睡一会儿。
The crow thinks his own bird fairest.
乌鸦总以为自己的雏鸟最美。
So how can I help you ? asked the detective.
那么我怎样才能帮你呢？侦探问。