1. 假定;假设;臆断
    If you make an assumption that something is true or will happen, you accept that it is true or will happen, often without any real proof.

assumption什么意思

    e.g. They have taken a wrong turning in their assumption that all men and women think alike...
           他们错误地设想所有男女均见解一致。
    e.g. Dr Subroto questioned the scientific assumption on which the global warming theory is based...
           苏布罗托博士质疑全球变暖理论所依据的科学假设。

2. （权力的）取得；（责任的）承担
    Someone's assumption of power or responsibility is their taking of it.

    e.g. The government have retained the support which greeted their assumption of power last March.
           自从在刚过去的三月掌权以来，政府的支持率依旧未减。