延迟满足的实验证明随着年龄的增长，幼儿的 品质有所提高

问答题Translate english into Chinese with “separable words 睡觉” Yesterday I was very tired and slept for more than ten hours. 昨天很累，我（ ）

问答题 可以在交易中采购量大可以得到比较好的折扣。