Tetrapolythionate
连四多硫酸盐
🗣️ 情景例句
You're probably right.
也许你说得对。
Here is a copy of itinerary we have worked out for you and your friends.Would you please have a look at it?
这是我们为你和你的朋友拟定的活动日程安排。请过目一下，好吗？
Take your time.
慢慢来。