Ophiacodonta
蛇齿亚目
🗣️ 情景例句
that Grandpa Philip bought for him.
祖父Philip给他买的。
Easier said than done.
说时容易做时难。
The stream wound its way across the field and then flowed right under their tent!
那小溪弯弯曲曲穿过田野，然后正好从他们的帐篷底下流过去。