Massenfilter
[機(jī)] 四極質(zhì)譜儀
??? 情景例句
She was playing with the idea of studying abroad.
她有出國留學(xué)的念頭，但并非很認(rèn)真。
Telling your troubles is swelling your troubles.
訴說煩惱等于增加煩惱。
Oh, yes.we don't carry that item anymore.
哦，是的，那一項(xiàng)目我們不再賣了。