Icosane
二十碳烷
🗣️ 情景例句
and he made the weekend very easy for us to enjoy.
使得我们的周末过得非常轻松愉快。
I should have studied last night, but I was too tired.
我昨晚应该学习，但是我太累了。
I had come ten miles since leaving the town,
从小镇出来，我走了10英里。