Nicosode
烟酸
🗣️ 情景例句
What are you doing?
在做什么？
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
Mrs.Richards quickly hid in the small storeroom under the stairs.
便赶紧躲到了楼梯下的小储藏室里。