Polyanhydride
[化] 聚酐
🗣️ 情景例句
I wish I had the recipe.
我真希望我有份菜谱。
We all know each other pretty well.
我们都非常了解对方。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
据估计，在英国蜘蛛一年里所消灭昆虫的重量超过这个国家人口的总重量。