名詞 expectation:

1. belief about (or mental picture of) the future
   同義詞：outlook, prospect
2. wishing with confidence of fulfillment
   同義詞：anticipation
3. the feeling that something is about to happen
4. the sum of the values of a random variable divided by the number of values
   同義詞：arithmetic mean, first moment, expected value

1. She ate a light lunch in expectation of a good dinner.
   她午飯吃得很少，期待晚飯時(shí)飽餐一頓。
2. He has great expectations from his uncle.
   他渴望從叔叔那繼承大筆遺產(chǎn)。

ex.pec.ta.tion

n.（名詞）

The act of expecting.
期待的行為
Eager anticipation:
熱切的期望：
例句：
eyes shining with expectation.
眼中閃耀著期盼的目光

The state of being expected.
被期待的狀態(tài)

Something expected:
期待之物：
例句：
a result that was beyond my wildest expectation.
出乎我預(yù)料的結(jié)果

expectations Prospects, especially of success or gain.
expectations 希望，期望：期望中的事，尤指成功或收獲
Statistics
【統(tǒng)計(jì)學(xué)】
The expected value of a random variable.
期望值：隨意可變量的期望值
The mean of a random variable.
隨意可變量
See expectancy
參見 expectancy

【引伸】
ex.pecta.tional
adj.（形容詞）