Isoheptane
异庚烷
🗣️ 情景例句
Turkey and ham are traditional dishes for Christmas.
火鸡和火腿是圣诞节传统的食物。
Would 1:00 be convenient?
1点钟行吗？
'I've just arrived by train,' she said.'I'm coming to see you.
“我刚下火车，”她说，“我这就来看你。