RAZ里很多文章的音频都有这个情况，但并非所有音频都这样。我从外网摘抄原因如下：
The word the is often pronounced "thee" before a vowel sound and "thuh" before a consonant sound. This is not a ruling. It's just a tendency to assist with the flow of speech.
Normally, we pronounce the with a short sound (like "thuh"). But when the comes before a vowel sound, we pronounce it as a long "thee".
vowel soundwritesay
athe applethee apple
ethe eggthee egg
ithe ice-creamthee ice-cream
othe orangethee orange
uthe ugli fruitthee ugli fruit
