center of the Earth

• 地中

center of the Earth的用法和样例：

例句

1. Ketty's wing had hurt before because of the bulrush.They flied very slowly.
   凯蒂的翅膀在芦苇地中受了些伤，所以他们飞得很慢。
2. Usually, the cactuses have long roots and they take their roots deep into the earth so that they can absorb the water from deeper soil.
   仙人掌的根通常很长，它们把长长的跟扎入地中，这样它们就可以吸收到更深的泥土中的水分了。