Glycolal
乙醇醛
??? 情景例句
I'm very sorry.
非常抱歉。
Watch out, it's dangerous.
注意，危險(xiǎn)??！
'At ten to eight.I bought a paper and waited for the train.'
“7點(diǎn)50分。我買了張報(bào)紙，等著車來(lái)?！?/div>
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