Ethylacetoacetone(eaa,heaa)
[化] 乙基乙酰丙酮
??? 情景例句
There are several tours of the Grand Canyon.
到大峽谷有好幾個旅游團。
Can you tell one from the other?
你能區別哪個是哪個嗎？
Since its discovery, it has become a sort of potholers' Everest.
自從被發現以后，這個洞成了洞穴探險者的珠穆朗瑪峰，