Spencer. You changed your mind.斯宾塞，你改主意了

change one's mind:改变主意

She is constantly changing her mind.

她经常改变主意。

He find it impossible to make her change her mind.

他发现使她改变主意是不可能的。

We can't know for sure. Emily looked it up,我们不确定，但是艾米丽查过

look up:查阅

You can look up this word in the vocabulary.

你可以在词汇表里查这个词。

You can look up a character under its radical.

你可以根据部首查找汉字。

相关短语:look up to尊敬

Children should look up to their parents.

孩子应当尊敬父母。

and her early pregnancy wouldn't have shown up in an autopsy.早期妊娠状况尸检是无法显示的

show up:揭露；露面，出现

His show-off only serves to show up his ignorance.

他的卖弄只不过暴露了他自己的无知。

What puzzles me is why they didn't show up.

令我百思不解的是他们为什么没有出现。