Cryctocoenose
生物化石群
🗣️ 情景例句
You hold on to them so there won't be a problem later.
你来保管， 免得等一下又出问题了。
Please call before you come,otherwise we might not be home.
请在你来前打一下电话来,否则我们可能不在家。
Are there any hobbies or sports you particularly like?
你有什么特别癖好或特别喜欢的体育运动吗？