Pentaether
五醚, 四甘醇二丁醚
🗣️ 情景例句
May I look it over?
我可以过目一遍吗？
The tongue ever turns to the aching teeth.
舌头总是碰着疼牙。
You will not have to spend the next few days recovering from a long and arduous journey.
用不着因为漫长的旅途的辛苦而花几天时间休息来恢复精神。