Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
It's getting late. Please excuse me, but I must leave right away.
时间不早了。对不起，我得赶紧走了。
Mr. Wagner, do you have a hotel reservation?
华格纳先生，你预订过旅馆吗？
On Wednesday evening, we went to the Town Hall.
星期三的晚上，我们去了市政厅。