when they ate their plant food cooked rather than raw.吃熟食時能比生食得到更多能量

rather than而非...；替代...

It is a telex rather than a letter.

與其說它是一封信，不如說它是一封電傳。

After all, the process of heating food does not increase the number of calories in it.畢竟，加熱食物的過程并不會造成食物內(nèi)含熱量的增加

after all畢竟；到底；終究

I'll have to go to my aunt's funeral she was my own flesh and blood after all.

我得參加我姑姑的葬禮－－她是我的親人哪。

The old methods proved best after all.

采用老方法結(jié)果反而是某事物最好。

It simulates the process of breaking down our food,它模擬食物在我們消化系統(tǒng)內(nèi)

break down分解

The machine must break down at this busy hour.

正忙的時候，機器偏偏又壞了。

He finally break down under the four-hour's strain.

在四小時的壓力下他終于支持不了。