After rereading the recipe, Tu realised the hot water had already damaged the active ingredient in the plant; therefore she proposed a method using low-temperature ether to extract the effective compound instead.
重读药方之后，屠呦呦意识到热水已经破坏了植物中的有效成分，因此她提出一种使用低温乙醚来提取有效化合物的方法。