Rcbf
區域性腦血流（Regional Cerebral Blood Flow）
??? 情景例句
OK, Richard. That's terrific.
很好， Richard ，真不錯。
I suppose Randy will return tomorrow for her hat.
我想蘭蒂明天會自己回來拿她的帽子。
An earthquake comes like a thief in the night, without warning.
地震就像夜間的小偷，不打招呼就來了。