B：That sounds good.
听起来不错。
immerse /??m??s/ v. 浸泡，使浸没；沉浸
用完洗衣粉 use up the washing powder
A：We've used up the washing powder, so I'll go downstairs to buy a few bags.
我们的洗衣粉用完了，所以我要下楼去买几袋。
B：There's a sale on washing powder at the supermarket. I suggest you go shopping there.
超市正在搞洗衣粉特价销售活动。我建议你去那里买。
downstairs /?da?n?ste?z/ adv. 在楼下；往楼下
sale /se?l/ n. （商店的）减价销售，廉价出售
suggest /s??d?est/ v. 建议；提出；暗示
◆ use up 用完