expectancy expectation 区别
Expectancy is a state of expectation
the state of expecting or hoping that something, especially something good or exciting, will happen
There was an air of expectancy among the waiting crowd.
等待的人群心怀期盼。
Expectation is something which is anticipated or is likely to happen.
a belief that something will happen because it is likely
We are confident in our expectation of a full recovery.
我们满怀信心地期待着完全康复。