deem sth necessary/important/appropriate etc The Commission will take as long as is deemed necessary to make its decision. 委员会将用其认为必要长的时间来作出决定。

deem sb/sth to be sth These buildings are deemed to be of architectural importance and must be protected. 这些建筑被认为具有重要的建筑学意义，必须加以保护。