The child's black eyes were sparkling in expectation of all the things to come.

孩子的黑眼睛闪闪发光，期待着一切的到来。

I did it in expectation of a reward.

我是指望着有所回报才做的。

People select news in expectation of a reward.

人们在选择新闻的时候都希望从中得到回报。

They closed the Windows in expectation of rain.

他们预料天要下雨，就关上了窗户。

I tried my best to do it in expectation of a reward.

我指望获得报酬才尽力做那件事的。