Velocitron
质谱仪
🗣️ 情景例句
Didn't you feel terrible?
没有感到可怕吗？
No one can disgrace us but ourselves.
除非羞耻自由取，他人岂能辱吾？。
You may have heard of Birth Control.
你们也许听说过控制人口出生的措施。