Diethyl ketone
[化] 二乙基甲酮; 3-戊酮\\n[医] 二乙酮
🧩 词语组成解析
a. [化]二乙基的
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
A rolling stone gathers no moss.
滚石不能苔。
Who can best handle the problem?
谁能将那问题处理得最好？
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。