| 单词 | up on something, be |
| 释义 | up on something, beBe well informed or up-to-date about something, as in I'm not up on the latest models of cars. [Colloquial] Words nearby up on something, bebetwixt and between, Betws-y-Coed, Betz, Betz cell, Beulah, up on something, be, Beur, Beuren syndrome, beurre blanc, beurre fondu, beurre manié The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. |
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