Tetraether
四醚
🗣️ 情景例句
Ms Lin worked hard all year.
林小姐一年到头辛勤工作。
There are only two minutes left.
只剩两分钟了。
It doesn't matter. I like walking. Look at the sun! It's a fine day for a walk.
不要紧。我喜欢步行。瞧瞧太阳！这是步行的好天气。