He talked about how much we owed to our parents, our duty to our country and so on and so forth. 他谈到我们受到父母多少恩惠、我们对国家应尽的义务等等。
One material can be distinguished from another by their physical properties: color, density, specific, heat and so on. 一种材料与另一种材料的区别在于他们的物理性能：颜色、密度和比热等等。
This shop sells clothes, shoes, hats and so on. 这商店卖衣服，鞋，帽子等等。
