Racs
[醫][=relative absorption cross section]相對吸收截面，相對吸收斷面
??? 情景例句
I don't think you've got your facts straight.
我認為你沒有把事實搞清楚。
Excuse me to give you so much trouble.
對不起給你帶來這么多麻煩。
Take my word for it.
相信我的話。