Diplacanthoidei
双棘鱼亚目
🗣️ 情景例句
Do you want to do something this Sunday? John and I would like you to come over for a party.
你星期日要不要做什么事？约翰和我想请你过来参加宴会。
Math is beyond me.
我对数学无能为力。
Lily, do you have a ruler?
莉莉，你有尺子吗？