be up in的用法和样例：
例句
- He must be an expert in his military duties.
他还应熟悉其军事职责。 - This business is right up my alley.
这种事情正是我熟悉的。
词汇搭配
- be wrapped up in 被包在 ... 里...
- be high up in the pictures 取得成功
be up in的相关资料：
临近单词
Bemba
be
be beleaguered with annoyance
be within one's discretion to
Be that reasonably clear?
be regardful of one's promise
be beyond one's comprehension
be forced to relinquish power
be destroyed by an earthquake
be overcome with astonishment
be unruffled whatever happens
Be hill road first right?
