Calacea
钙质海绵目
🗣️ 情景例句
this weekend?
这个周末？
Mr. Smith is still in his forties.
史密斯先生才四十几岁。
Even seemingly insignificant remains can shed interesting light on the history of early man.
即使看起来微不足道的遗物，也可能揭示人类早期历史的一些有趣的内容。