Bipyramidal
双锥体
🗣️ 情景例句
Are you the oldest in your family?
你是你家里最大的孩子吗？
Mother doesn't approve of her smoking.
母亲不赞成她吸烟。
We were so excited, my brother and I, that we did not get to sleep until very late.
我们太激动，以至于我和我弟到很晚才睡得着。