Then we have " ree" , an r sound and a high e.

“ree”，一个/r/音和一个高/e/音。

What happens to your REE — this is this middle line here, that's the resting energy expenditure.

REE 水平会如何变化呢——就这条中间的线，就静息能量消耗。

So don't make that REE. Refer, refer, but re re re refer, refer.

所以不要做那个REE。考，考，但考，考。

And if this is too hard, just try to make the " ree" sound without the ending.

如果这太难了， 就试着发出没有结尾的“ree” 声。

So this is saying: " dee" and " ree" ; the " d" sound and the " r" sound.

所以这说：“dee” 和“ree” ； “d” 音和“r” 音。