重点词汇:1. essential /ɪˈsenʃl/ n. 必需品2. hoard /hɔːrd/ v. 贮藏,囤积3. panic-buying /ˈpænɪk ˈbaɪɪŋ/ n. 抢购,恐慌性抢购重点例句/相关口语表达:1. It's necessary to stock up on essentials. 储存必需品很有必要。2. There were panic-buying in supermarkets last night. 昨天晚上超市里出现了恐慌性购买。