Vitamins
n. 维生素（ vitamin的复数形式 ）
🗣️ 情景例句
to plan the refurnishing of the old library
计划重新整修老图书馆
Know something like the palm of one's hand.
熟知其事，了如指掌。
It is eight o'clock.The children go to school by car every day, but today, they are going to school on foot.
现在是8点钟。孩子们每天都乘小汽车去上学，而今天，他们正步行上学。