have many (or other) irons in the fire
- have a range of options or courses of action available, or be involved in many activities or commitments at the same time
- have many (or a range of) options or courses of action available or be involved in many ...
Oxford American Dictionary
1。 （一）許多其他的（B）任何其他（三）其他（四）任何 2。 （一）眾所周知的（B）稱為（C）已知（D）由已知 3。 （a）約（B）故意（C）正確（D）比例 4。 （一）膚淺（B）人工（C）透明（D）綜合
...動詞learned的受詞，所以應該用what: The peasant learned what many others never understand. = The peasant learned the thing that many others...
... is also full of cherry trees, as are many other places around the island.= Yangmingshan is also full of cherry...