Velocitron
质谱仪
🗣️ 情景例句
Eating salad is good for your health.
多吃色拉（蔬菜）对你的健康有益。
Though thy enemy seem a mouse, yet watch him like a lion.
即使敌人小如鼠，也要防他如防虎。
For a beginner, you're pretty good.
做为一个初学者，你已经做得很好了。