Massenfilter
[机] 四极质谱仪
🗣️ 情景例句
Is there a credit plan available?
我可以分期付款吗？
A clear conscience laughs at false accusations.
白日不做亏心事，夜半敲门心不惊。
No problem! Tell me, do I have to take them before or after meals?
“那不难！告诉我，我是在饭前还是饭后吃呢？”