Echinoid
n. [动]海胆纲动物\\na. 海胆状的, 海胆属的
🗣️ 情景例句
It really was a wonderful ceremony.
那真是一个美好的（结婚）典礼。
I'm glad to hear about your promotion.
我很高兴听到你升迁的消息。
I'm afraid I didn't, officer.I must have been dreaming.
恐怕我没有看见，警官。我一定思想开小差了。