Levulinic
乙酰丙
??? 情景例句
If you cannot make a counter offer, then I'm afraid we can't make a deal.
如果你不還價的話，恐怕我們無法交易。
The building of the new road has been held up by bad weather.
這條新馬路的修筑因天氣惡劣而受阻。
Could you tell me what the maximum weight allowance is?
您能告訴我行李的最大重量限額是多少嗎？